Trial Outcomes & Findings for Optimize Low Back Pain (NCT NCT03859713)

NCT ID: NCT03859713

Last Updated: 2026-03-06

Results Overview

Back pain specific measure of functional disability to address Aim 1, score range 0-100 with neagtive values representing improvement in disability

Recruitment status

COMPLETED

Study phase

NA

Target enrollment

749 participants

Primary outcome timeframe

baseline, 10 weeks

Results posted on

2026-03-06

Participant Flow

Trial enrollment began in March, 2019. In March, 2020 the trial suspended enrollments across all sites due to COVID restrictions. Enrollment resumed in April, 2021 and was completed in September, 2023.

A total 751 participants were randomized. Three participants were determined to be false inclusions after randomization. One false inclusion was the result of not meeting the minimum disability threshold for eligibility. This participant continued in the study. The other two false inclusions were persons with medical conditions that were exclusions. These two participants did not participate in the study. Therefore study results are reported for 749 participants.

Participant milestones

Participant milestones
Measure
PT Followed by Switching to CBT in Phase II for Nonresponders
Phase I treatment is 8 weekly sessions of evidence-based physical therapy (PT). At the 10-week follow-up participants who are non-responders to Phase I PT will switch to 8 weekly sessions of cognitive behavioral therapy (CBT) as Phase II treatment. If participant is a responder to Phase I PT, he or she will receive up to 2 more PT sessions in Phase II of treatment.
PT Followed by Mindfulness in Phase II for Nonresponders
Phase I treatment is 8 weekly sessions of evidence-based physical therapy (PT). At the 10-week follow-up participants who are non-responders to Phase I PT will receive 8 weekly sessions of mindfulness using a mindfulness-oriented recovery enhancement protocol as Phase II treatment. If participant is a responder to Phase I PT, he or she will receive up to 2 more PT sessions in Phase II of treatment.
CBT Followed by Switching to PT in Phase II for Nonresponders
Phase I treatment is 8 weekly sessions of cognitive behavioral therapy (CBT). At the 10-week follow-up participants who are non-responders to Phase I CBT will switch to 8 weekly sessions of evidence-based physical therapy (PT) as Phase II treatment. If participant is a responder to Phase I CBT, he or she will receive up to 2 more CBT sessions in Phase II of treatment.
CBT Followed by Mindfulness in Phase II for Nonresponders
Phase I treatment is 8 weekly sessions of cognitive behavioral therapy (CBT). At the 10-week follow-up participants who are non-responders to Phase I CBT will switch to 8 weekly sessions of mindfulness using a mindfulness-oriented recovery enhancement protocol as Phase II treatment. If participant is a responder to Phase I CBT, he or she will receive up to 2 more CBT sessions in Phase II of treatment.
Responder: Phase I PT Treatment Alone
This arm includes participants assigned to PT who respond in Phase I
Responder: Phase I CBT Treatment Alone
This arm includes participants assigned to CBT who respond in Phase I
Phase I
STARTED
0
0
0
0
374
375
Phase I
COMPLETED
0
0
0
0
296
280
Phase I
NOT COMPLETED
0
0
0
0
78
95
Phase II
STARTED
103
101
110
109
73
38
Phase II
COMPLETED
91
87
100
93
69
35
Phase II
NOT COMPLETED
12
14
10
16
4
3
Long-term Follow-Up
STARTED
91
87
100
93
69
35
Long-term Follow-Up
COMPLETED
91
83
88
93
62
30
Long-term Follow-Up
NOT COMPLETED
0
4
12
0
7
5

Reasons for withdrawal

Reasons for withdrawal
Measure
PT Followed by Switching to CBT in Phase II for Nonresponders
Phase I treatment is 8 weekly sessions of evidence-based physical therapy (PT). At the 10-week follow-up participants who are non-responders to Phase I PT will switch to 8 weekly sessions of cognitive behavioral therapy (CBT) as Phase II treatment. If participant is a responder to Phase I PT, he or she will receive up to 2 more PT sessions in Phase II of treatment.
PT Followed by Mindfulness in Phase II for Nonresponders
Phase I treatment is 8 weekly sessions of evidence-based physical therapy (PT). At the 10-week follow-up participants who are non-responders to Phase I PT will receive 8 weekly sessions of mindfulness using a mindfulness-oriented recovery enhancement protocol as Phase II treatment. If participant is a responder to Phase I PT, he or she will receive up to 2 more PT sessions in Phase II of treatment.
CBT Followed by Switching to PT in Phase II for Nonresponders
Phase I treatment is 8 weekly sessions of cognitive behavioral therapy (CBT). At the 10-week follow-up participants who are non-responders to Phase I CBT will switch to 8 weekly sessions of evidence-based physical therapy (PT) as Phase II treatment. If participant is a responder to Phase I CBT, he or she will receive up to 2 more CBT sessions in Phase II of treatment.
CBT Followed by Mindfulness in Phase II for Nonresponders
Phase I treatment is 8 weekly sessions of cognitive behavioral therapy (CBT). At the 10-week follow-up participants who are non-responders to Phase I CBT will switch to 8 weekly sessions of mindfulness using a mindfulness-oriented recovery enhancement protocol as Phase II treatment. If participant is a responder to Phase I CBT, he or she will receive up to 2 more CBT sessions in Phase II of treatment.
Responder: Phase I PT Treatment Alone
This arm includes participants assigned to PT who respond in Phase I
Responder: Phase I CBT Treatment Alone
This arm includes participants assigned to CBT who respond in Phase I
Phase I
Withdrawal by Subject
0
0
0
0
22
49
Phase I
Lost to Follow-up
0
0
0
0
56
46
Phase II
Withdrawal by Subject
5
4
4
4
0
0
Phase II
Lost to Follow-up
7
10
6
12
4
3
Long-term Follow-Up
Lost to Follow-up
0
4
12
0
7
5

Baseline Characteristics

BMI missing for 6 participants

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Phase I PT Treatment
n=374 Participants
This arm includes all participants assigned to PT for Phase I treatment
Phase I CBT Treatment
n=375 Participants
This arm includes all participants assigned to CBT in Phase I
Total
n=749 Participants
Total of all reporting groups
Age, Continuous
46.4 Years
STANDARD_DEVIATION 11.8 • n=374 Participants
46.5 Years
STANDARD_DEVIATION 11.9 • n=375 Participants
46.5 Years
STANDARD_DEVIATION 11.8 • n=749 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
47 Participants
n=374 Participants
28 Participants
n=375 Participants
75 Participants
n=749 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
324 Participants
n=374 Participants
342 Participants
n=375 Participants
666 Participants
n=749 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
3 Participants
n=374 Participants
5 Participants
n=375 Participants
8 Participants
n=749 Participants
Race (NIH/OMB)
American Indian or Alaska Native
1 Participants
n=374 Participants
3 Participants
n=375 Participants
4 Participants
n=749 Participants
Race (NIH/OMB)
Asian
6 Participants
n=374 Participants
8 Participants
n=375 Participants
14 Participants
n=749 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
3 Participants
n=374 Participants
3 Participants
n=375 Participants
6 Participants
n=749 Participants
Race (NIH/OMB)
Black or African American
69 Participants
n=374 Participants
73 Participants
n=375 Participants
142 Participants
n=749 Participants
Race (NIH/OMB)
White
262 Participants
n=374 Participants
257 Participants
n=375 Participants
519 Participants
n=749 Participants
Race (NIH/OMB)
More than one race
12 Participants
n=374 Participants
13 Participants
n=375 Participants
25 Participants
n=749 Participants
Race (NIH/OMB)
Unknown or Not Reported
21 Participants
n=374 Participants
18 Participants
n=375 Participants
39 Participants
n=749 Participants
Body Mass Index
32.6 kg/m2
STANDARD_DEVIATION 8.8 • n=370 Participants • BMI missing for 6 participants
31.9 kg/m2
STANDARD_DEVIATION 8.8 • n=373 Participants • BMI missing for 6 participants
32.3 kg/m2
STANDARD_DEVIATION 8.8 • n=743 Participants • BMI missing for 6 participants
Current Smoker
38 Participants
n=372 Participants • Smoking status was not reported by four participants
48 Participants
n=373 Participants • Smoking status was not reported by four participants
86 Participants
n=745 Participants • Smoking status was not reported by four participants
Highest Education Level Completed
Less Than High School
13 Participants
n=372 Participants • Four participants did not report education level
27 Participants
n=373 Participants • Four participants did not report education level
40 Participants
n=745 Participants • Four participants did not report education level
Highest Education Level Completed
Completed High School
160 Participants
n=372 Participants • Four participants did not report education level
139 Participants
n=373 Participants • Four participants did not report education level
299 Participants
n=745 Participants • Four participants did not report education level
Highest Education Level Completed
Completed College Degree
199 Participants
n=372 Participants • Four participants did not report education level
207 Participants
n=373 Participants • Four participants did not report education level
406 Participants
n=745 Participants • Four participants did not report education level
Prior Lumbar Spine Surgery
42 Participants
n=372 Participants • Two participants did not provide prior surgey information
57 Participants
n=375 Participants • Two participants did not provide prior surgey information
99 Participants
n=747 Participants • Two participants did not provide prior surgey information
Leg Pain with Back Pain
91 Participants
n=372 Participants • Two participants did not provide leg pain responses
100 Participants
n=375 Participants • Two participants did not provide leg pain responses
191 Participants
n=747 Participants • Two participants did not provide leg pain responses
Provided Opioids at Index Healthcare Visit
78 Participants
n=367 Participants • 10 participants did not provide information on opioids at index visit
84 Participants
n=372 Participants • 10 participants did not provide information on opioids at index visit
162 Participants
n=739 Participants • 10 participants did not provide information on opioids at index visit
Duration of Opioid Use at Baseline
None
307 Participants
n=369 Participants • Seven participants did not provide opioid use duration information
296 Participants
n=373 Participants • Seven participants did not provide opioid use duration information
603 Participants
n=742 Participants • Seven participants did not provide opioid use duration information
Duration of Opioid Use at Baseline
<30 days
13 Participants
n=369 Participants • Seven participants did not provide opioid use duration information
9 Participants
n=373 Participants • Seven participants did not provide opioid use duration information
22 Participants
n=742 Participants • Seven participants did not provide opioid use duration information
Duration of Opioid Use at Baseline
30 days - 1 year
11 Participants
n=369 Participants • Seven participants did not provide opioid use duration information
14 Participants
n=373 Participants • Seven participants did not provide opioid use duration information
25 Participants
n=742 Participants • Seven participants did not provide opioid use duration information
Duration of Opioid Use at Baseline
> 1 year
38 Participants
n=369 Participants • Seven participants did not provide opioid use duration information
54 Participants
n=373 Participants • Seven participants did not provide opioid use duration information
92 Participants
n=742 Participants • Seven participants did not provide opioid use duration information
Time From First Low Back Pain Episode
< 1 year ago
40 Participants
n=372 Participants • Two participants did not provide information on duration since first back pain episode
43 Participants
n=375 Participants • Two participants did not provide information on duration since first back pain episode
83 Participants
n=747 Participants • Two participants did not provide information on duration since first back pain episode
Time From First Low Back Pain Episode
1-5 years ago
95 Participants
n=372 Participants • Two participants did not provide information on duration since first back pain episode
98 Participants
n=375 Participants • Two participants did not provide information on duration since first back pain episode
193 Participants
n=747 Participants • Two participants did not provide information on duration since first back pain episode
Time From First Low Back Pain Episode
6-10 years ago
57 Participants
n=372 Participants • Two participants did not provide information on duration since first back pain episode
67 Participants
n=375 Participants • Two participants did not provide information on duration since first back pain episode
124 Participants
n=747 Participants • Two participants did not provide information on duration since first back pain episode
Time From First Low Back Pain Episode
>10 years ago
180 Participants
n=372 Participants • Two participants did not provide information on duration since first back pain episode
167 Participants
n=375 Participants • Two participants did not provide information on duration since first back pain episode
347 Participants
n=747 Participants • Two participants did not provide information on duration since first back pain episode
Oswestry Disability Index
41.2 units on a scale
STANDARD_DEVIATION 12.8 • n=374 Participants
41.4 units on a scale
STANDARD_DEVIATION 12.7 • n=375 Participants
41.3 units on a scale
STANDARD_DEVIATION 12.8 • n=749 Participants
Numeric Pain Intensity Rating
5.4 units on a scale
STANDARD_DEVIATION 1.6 • n=374 Participants
5.6 units on a scale
STANDARD_DEVIATION 1.8 • n=375 Participants
5.5 units on a scale
STANDARD_DEVIATION 1.7 • n=749 Participants
Patient-reported outcomes measurement information system (PROMIS) - pain interference
63.4 T score
STANDARD_DEVIATION 5.6 • n=367 Participants • 13 participants did not provide a PROMIS pain interference score
63.2 T score
STANDARD_DEVIATION 6.0 • n=369 Participants • 13 participants did not provide a PROMIS pain interference score
63.3 T score
STANDARD_DEVIATION 5.8 • n=736 Participants • 13 participants did not provide a PROMIS pain interference score
Patient-reported outcomes measurement information system (PROMIS) - physical function
38.5 T score
STANDARD_DEVIATION 5.2 • n=369 Participants • 12 participants did not complete the PROMIS - physical function at baseline
38.8 T score
STANDARD_DEVIATION 5.7 • n=368 Participants • 12 participants did not complete the PROMIS - physical function at baseline
38.6 T score
STANDARD_DEVIATION 5.4 • n=737 Participants • 12 participants did not complete the PROMIS - physical function at baseline
Patient-reported outcomes measurement information system (PROMIS) - depression
51.3 T score
STANDARD_DEVIATION 10.0 • n=370 Participants • 4 participants did not complete the PROMIS - depression at baseline
52.5 T score
STANDARD_DEVIATION 10.3 • n=375 Participants • 4 participants did not complete the PROMIS - depression at baseline
51.9 T score
STANDARD_DEVIATION 10.2 • n=745 Participants • 4 participants did not complete the PROMIS - depression at baseline
Patient-reported outcomes measurement information system (PROMIS) - anxiety
54.6 T score
STANDARD_DEVIATION 10.1 • n=370 Participants • 9 participants did not complete the PROMIS - anxiety at baseline
54.5 T score
STANDARD_DEVIATION 10.5 • n=370 Participants • 9 participants did not complete the PROMIS - anxiety at baseline
54.5 T score
STANDARD_DEVIATION 10.3 • n=740 Participants • 9 participants did not complete the PROMIS - anxiety at baseline
Patient-reported outcomes measurement information system (PROMIS) - social roles
45.0 T score
STANDARD_DEVIATION 6.4 • n=369 Participants • 5 participants did not complete the PROMIS - social roles at baseline
44.7 T score
STANDARD_DEVIATION 6.5 • n=375 Participants • 5 participants did not complete the PROMIS - social roles at baseline
44.9 T score
STANDARD_DEVIATION 6.5 • n=744 Participants • 5 participants did not complete the PROMIS - social roles at baseline
Patient-reported outcomes measurement information system (PROMIS) - sleep disturbance
55.9 T score
STANDARD_DEVIATION 8.0 • n=370 Participants • 11 participants did not complete the PROMIS - sleep disturbance at baseline
56.9 T score
STANDARD_DEVIATION 7.4 • n=368 Participants • 11 participants did not complete the PROMIS - sleep disturbance at baseline
56.4 T score
STANDARD_DEVIATION 7.7 • n=738 Participants • 11 participants did not complete the PROMIS - sleep disturbance at baseline
Patient-reported outcomes measurement information system (PROMIS) - fatigue
57.7 T score
STANDARD_DEVIATION 9.6 • n=367 Participants • 12 participants did not complete the PROMIS - Fatigue
57.4 T score
STANDARD_DEVIATION 9.3 • n=370 Participants • 12 participants did not complete the PROMIS - Fatigue
57.5 T score
STANDARD_DEVIATION 9.4 • n=737 Participants • 12 participants did not complete the PROMIS - Fatigue
Sex/Gender, Customized
Female
237 Participants
n=374 Participants
236 Participants
n=375 Participants
473 Participants
n=749 Participants
Sex/Gender, Customized
Male
137 Participants
n=374 Participants
137 Participants
n=375 Participants
274 Participants
n=749 Participants
Sex/Gender, Customized
Missing or Other
0 Participants
n=374 Participants
2 Participants
n=375 Participants
2 Participants
n=749 Participants

PRIMARY outcome

Timeframe: baseline, 10 weeks

Back pain specific measure of functional disability to address Aim 1, score range 0-100 with neagtive values representing improvement in disability

Outcome measures

Outcome measures
Measure
Phase I Non-Responders Assigned to Switching in Phase II
n=374 Participants
Includes all non-responders in Phase I who were re-randomized to Switching treatments in Phase II
Phase I Non-Responders Assigned to Mindfulness in Phase II
n=375 Participants
Includes all Phase I non-responders who were re-randomized to receive Mindfulness in Phase II
Change in Oswestry Disability Index From Baseline to 10 Weeks
-8.8 Units on a scale
Standard Error 0.81
-6.1 Units on a scale
Standard Error 0.80

PRIMARY outcome

Timeframe: 10 weeks, 52 weeks

Population: Note that as specified in the study protocol and statistical analysis plan, non-responders randomized to swtich treatments or to mindfulness are combined across Phase I treatment groups.

Back pain specific measure of functional disability to address Aim 2, score range 0-100 with negative values representing improvement in disability

Outcome measures

Outcome measures
Measure
Phase I Non-Responders Assigned to Switching in Phase II
n=213 Participants
Includes all non-responders in Phase I who were re-randomized to Switching treatments in Phase II
Phase I Non-Responders Assigned to Mindfulness in Phase II
n=210 Participants
Includes all Phase I non-responders who were re-randomized to receive Mindfulness in Phase II
Change in Oswestry Disability Index From 10-weeks to 52 Weeks
-5.4 Units on a scale
Standard Error 0.96
-4.9 Units on a scale
Standard Error 0.97

PRIMARY outcome

Timeframe: baseline, 10 weeks

0-10 numeric rating of pain intensity measured as average of current, best and worst pain ratings in past 24 hours to address Aim 1. Negative values represent a reduction in pain intensity.

Outcome measures

Outcome measures
Measure
Phase I Non-Responders Assigned to Switching in Phase II
n=374 Participants
Includes all non-responders in Phase I who were re-randomized to Switching treatments in Phase II
Phase I Non-Responders Assigned to Mindfulness in Phase II
n=375 Participants
Includes all Phase I non-responders who were re-randomized to receive Mindfulness in Phase II
Change in Numeric Pain Intensity Rating From Baseline to 10 Weeks
-1.2 Units on a scale
Standard Error 0.11
-0.84 Units on a scale
Standard Error 0.11

PRIMARY outcome

Timeframe: 10 weeks, 52 weeks

Population: Note that as specified in the study protocol and statistical analysis plan, non-responders randomized to swtich treatments or to mindfulness are combined across Phase I treatment groups.

0-10 numeric rating of pain intensity measured as average of current, best and worst pain ratings in past 24 hours to address Aim 2. Negative values represent an improvement in pain intensity.

Outcome measures

Outcome measures
Measure
Phase I Non-Responders Assigned to Switching in Phase II
n=213 Participants
Includes all non-responders in Phase I who were re-randomized to Switching treatments in Phase II
Phase I Non-Responders Assigned to Mindfulness in Phase II
n=210 Participants
Includes all Phase I non-responders who were re-randomized to receive Mindfulness in Phase II
Change in Numeric Pain Intensity Rating From 10-weeks to 52 Weeks
-0.53 Units on a scale
Standard Error 0.15
-0.48 Units on a scale
Standard Error .15

SECONDARY outcome

Timeframe: baseline, 10 weeks, 26 weeks, 52 weeks

PROMIS-29 subscales scores reported across 7 domains

Outcome measures

Outcome data not reported

SECONDARY outcome

Timeframe: baseline, 10 weeks

Patient-Reported Outcomes Information System (PROMIS) 4-item short form (part of PROMIS-29) assessed as a T-score with mean = 50 and SD = 10. negative scores indicate improvement in pain interference.

Outcome measures

Outcome measures
Measure
Phase I Non-Responders Assigned to Switching in Phase II
n=374 Participants
Includes all non-responders in Phase I who were re-randomized to Switching treatments in Phase II
Phase I Non-Responders Assigned to Mindfulness in Phase II
n=375 Participants
Includes all Phase I non-responders who were re-randomized to receive Mindfulness in Phase II
Change in Pain Interference From Baseline to 10 Weeks
-4.0 T score
Standard Error 0.43
-2.2 T score
Standard Error 0.36

SECONDARY outcome

Timeframe: baseline, 10 weeks

Patient-Reported Outcomes Information System (PROMIS) 4-item short form (part of PROMIS-29) assessed as a T-score with mean = 50 and SD = 10. Negative values indicate greater improvement in fatigue.

Outcome measures

Outcome measures
Measure
Phase I Non-Responders Assigned to Switching in Phase II
n=374 Participants
Includes all non-responders in Phase I who were re-randomized to Switching treatments in Phase II
Phase I Non-Responders Assigned to Mindfulness in Phase II
n=375 Participants
Includes all Phase I non-responders who were re-randomized to receive Mindfulness in Phase II
Change in Fatigue From Baseline to !0 Weeks
-1.2 T score
Standard Error 0.50
0.25 T score
Standard Error 0.48

SECONDARY outcome

Timeframe: baseline, 10 weeks

Patient-Reported Outcomes Information System (PROMIS) 4-item short form (part of PROMIS-29) assessed as a T-score with mean = 50 and SD = 10. Negative values indicate improvement in sleep disturbance

Outcome measures

Outcome measures
Measure
Phase I Non-Responders Assigned to Switching in Phase II
n=374 Participants
Includes all non-responders in Phase I who were re-randomized to Switching treatments in Phase II
Phase I Non-Responders Assigned to Mindfulness in Phase II
n=375 Participants
Includes all Phase I non-responders who were re-randomized to receive Mindfulness in Phase II
Change in Sleep Disturbance From Baseline to 10 Weeks
-2.1 T score
Standard Error 0.40
-0.60 T score
Standard Error 0.42

SECONDARY outcome

Timeframe: baseline, 10 weeks

Patient-Reported Outcomes Information System (PROMIS) 4-item short form (part of PROMIS-29)assessed as a T-score with mean = 50 and SD = 10. Negative values indicate improvement in anxiety

Outcome measures

Outcome measures
Measure
Phase I Non-Responders Assigned to Switching in Phase II
n=374 Participants
Includes all non-responders in Phase I who were re-randomized to Switching treatments in Phase II
Phase I Non-Responders Assigned to Mindfulness in Phase II
n=375 Participants
Includes all Phase I non-responders who were re-randomized to receive Mindfulness in Phase II
Change in Anxiety From Baseline to 10 Weeks
0.43 T score
Standard Error 0.49
2.5 T score
Standard Error 0.51

SECONDARY outcome

Timeframe: baseline, 10 weeks

Patient-Reported Outcomes Information System (PROMIS) 4-item short form assessed as a T-score with mean = 50 and SD = 10. Negative values indicate improvement in depression

Outcome measures

Outcome measures
Measure
Phase I Non-Responders Assigned to Switching in Phase II
n=374 Participants
Includes all non-responders in Phase I who were re-randomized to Switching treatments in Phase II
Phase I Non-Responders Assigned to Mindfulness in Phase II
n=375 Participants
Includes all Phase I non-responders who were re-randomized to receive Mindfulness in Phase II
Change in Depression From Baseline to 10 Weeks
1.3 T score
Standard Error 0.49
2.0 T score
Standard Error 0.47

SECONDARY outcome

Timeframe: baseline, 10 weeks

Patient-Reported Outcomes Information System (PROMIS) 4-item short form assessed as a T-score with mean = 50 and SD = 10. Negative values indicate improvement in the ability to perform social roles

Outcome measures

Outcome measures
Measure
Phase I Non-Responders Assigned to Switching in Phase II
n=374 Participants
Includes all non-responders in Phase I who were re-randomized to Switching treatments in Phase II
Phase I Non-Responders Assigned to Mindfulness in Phase II
n=375 Participants
Includes all Phase I non-responders who were re-randomized to receive Mindfulness in Phase II
Change in Social Role Participation From Baseline to 10 Weeks
1.9 T score
Standard Error 0.44
0.50 T score
Standard Error 0.36

SECONDARY outcome

Timeframe: baseline, 10 weeks

Population: All participants included in analyses with multiple imputation for missing data.

Use of either MRI or CT for low back pain

Outcome measures

Outcome measures
Measure
Phase I Non-Responders Assigned to Switching in Phase II
n=374 Participants
Includes all non-responders in Phase I who were re-randomized to Switching treatments in Phase II
Phase I Non-Responders Assigned to Mindfulness in Phase II
n=375 Participants
Includes all Phase I non-responders who were re-randomized to receive Mindfulness in Phase II
Health Care Utilization of Advanced Imaging for Back Pain Over 10 Weeks
27 Participants
30 Participants

SECONDARY outcome

Timeframe: baseline, 10 weeks

Population: All participants included in analysis with multiple imputation used for missing data

Long-term use of opioids for pain management defined as use on all or most days in the past 90 days

Outcome measures

Outcome measures
Measure
Phase I Non-Responders Assigned to Switching in Phase II
n=374 Participants
Includes all non-responders in Phase I who were re-randomized to Switching treatments in Phase II
Phase I Non-Responders Assigned to Mindfulness in Phase II
n=375 Participants
Includes all Phase I non-responders who were re-randomized to receive Mindfulness in Phase II
Opioid Utilization at 10-week Assessment
32 Participants
35 Participants

SECONDARY outcome

Timeframe: 10 weeks

Population: Participants analyzed include those who initiated Phase I treatment

Self-reported physical or psychological side effects of study treatments

Outcome measures

Outcome measures
Measure
Phase I Non-Responders Assigned to Switching in Phase II
n=254 Participants
Includes all non-responders in Phase I who were re-randomized to Switching treatments in Phase II
Phase I Non-Responders Assigned to Mindfulness in Phase II
n=219 Participants
Includes all Phase I non-responders who were re-randomized to receive Mindfulness in Phase II
Treatment Side Effects
46 Participants
24 Participants

SECONDARY outcome

Timeframe: baseline, 10 weeks

Population: Analysis population is participants providing a 10-week assessment ODI score

Dichotomous outcome based on achieving at least 50% improvement on ODI from baseline score

Outcome measures

Outcome measures
Measure
Phase I Non-Responders Assigned to Switching in Phase II
n=296 Participants
Includes all non-responders in Phase I who were re-randomized to Switching treatments in Phase II
Phase I Non-Responders Assigned to Mindfulness in Phase II
n=280 Participants
Includes all Phase I non-responders who were re-randomized to receive Mindfulness in Phase II
Treatment Responder
73 Participants
38 Participants

SECONDARY outcome

Timeframe: baseline, 10 weeks

Population: All participants included in analyses based on Phase I treatment assignment with multiple imputation for missing data.

Use of injections for low back pain

Outcome measures

Outcome measures
Measure
Phase I Non-Responders Assigned to Switching in Phase II
n=374 Participants
Includes all non-responders in Phase I who were re-randomized to Switching treatments in Phase II
Phase I Non-Responders Assigned to Mindfulness in Phase II
n=375 Participants
Includes all Phase I non-responders who were re-randomized to receive Mindfulness in Phase II
Health Care Utilization of Injections for Back Pain Over 10 Weeks
12 Participants
31 Participants

SECONDARY outcome

Timeframe: baseline, 10 weeks

Population: All participants included in analyses based on Phase I treatment assignment with multiple imputation for missing data.

Use of radiographs for low back pain

Outcome measures

Outcome measures
Measure
Phase I Non-Responders Assigned to Switching in Phase II
n=374 Participants
Includes all non-responders in Phase I who were re-randomized to Switching treatments in Phase II
Phase I Non-Responders Assigned to Mindfulness in Phase II
n=375 Participants
Includes all Phase I non-responders who were re-randomized to receive Mindfulness in Phase II
Health Care Utilization of Radiographs for Back Pain Over 10 Weeks
14 Participants
16 Participants

Adverse Events

Phase I PT Treatment

Serious events: 9 serious events
Other events: 0 other events
Deaths: 0 deaths

Phase I CBT Treatment

Serious events: 12 serious events
Other events: 0 other events
Deaths: 0 deaths

Phase I Non-Responders Re-Randomized to CBT

Serious events: 2 serious events
Other events: 0 other events
Deaths: 0 deaths

Phase I Non-Responders Re-Randomized to PT

Serious events: 3 serious events
Other events: 0 other events
Deaths: 0 deaths

Phase I Non-Responders Re-Randomized to Mindfulness

Serious events: 11 serious events
Other events: 0 other events
Deaths: 0 deaths

Serious adverse events

Serious adverse events
Measure
Phase I PT Treatment
n=374 participants at risk
This arm includes participants assigned to PT as their Phase I treatment Physical Therapy: Evidence-based physical therapy provided in 8 individual sessions including patient education, exercise instruction and manual therapy.
Phase I CBT Treatment
n=375 participants at risk
This arm includes participants assigned to CBT for their Phase I treatment Cognitive Behavioral Therapy: Evidence-based cognitive behavioral therapy provided in 8 individual sessions focused on key components of CBT; 1) identifying and monitoring maladaptive cognitions, 2) developing coping strategies (e.g., distraction, relaxation, etc.), 3) setting and working towards behavioral goals, especially focused on physical activity, and 4) focusing on self-management skills and home instruction
Phase I Non-Responders Re-Randomized to CBT
n=103 participants at risk
Includes all Non-Responders in Phase I who were re-randomized to CBT in Phase II Cognitive Behavioral Therapy: Evidence-based cognitive behavioral therapy provided in 8 individual sessions focused on key components of CBT; 1) identifying and monitoring maladaptive cognitions, 2) developing coping strategies (e.g., distraction, relaxation, etc.), 3) setting and working towards behavioral goals, especially focused on physical activity, and 4) focusing on self-management skills and home instruction Phase I Treatment: Includes all participants receiving any Phase I intervention
Phase I Non-Responders Re-Randomized to PT
n=110 participants at risk
Includes all Non-Responders in Phase I who were re-randomized to PT in Phase II Physical Therapy: Evidence-based physical therapy provided in 8 individual sessions including patient education, exercise instruction and manual therapy. Phase I Treatment: Includes all participants receiving any Phase I intervention
Phase I Non-Responders Re-Randomized to Mindfulness
n=197 participants at risk
Phase I Treatment: Includes all participants receiving any Phase I intervention who were re-randomized to Mindfulness. Mindfulness is provided in 8 individual sessions. Focus of sessions is cognitive reappraisal, positive savoring and mindfulness practices. Phase I Treatment: Includes all participants receiving any Phase I intervention
Surgical and medical procedures
Back Surgery
1.6%
6/374 • Number of events 6 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
1.9%
7/375 • Number of events 7 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
1.9%
2/103 • Number of events 2 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
1.8%
2/110 • Number of events 2 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
3.0%
6/197 • Number of events 6 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
Infections and infestations
COVID Hospitalization
0.00%
0/374 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/375 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/103 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/110 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
1.0%
2/197 • Number of events 2 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
Musculoskeletal and connective tissue disorders
Musculoskeletal Injury or Fracture
0.27%
1/374 • Number of events 1 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.53%
2/375 • Number of events 2 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/103 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/110 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.51%
1/197 • Number of events 1 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
Injury, poisoning and procedural complications
Hopsitalization following accident
0.00%
0/374 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.27%
1/375 • Number of events 1 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/103 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.91%
1/110 • Number of events 1 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/197 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
Gastrointestinal disorders
Hospitalized for abdominal pain
0.27%
1/374 • Number of events 1 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/375 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/103 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/110 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/197 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
Cardiac disorders
Hospitalized for Chest Pain
0.00%
0/374 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.27%
1/375 • Number of events 1 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/103 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/110 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/197 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
Infections and infestations
Hopsitalized for Osteomyelitis of humerus
0.00%
0/374 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.27%
1/375 • Number of events 1 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/103 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/110 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/197 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
Gastrointestinal disorders
Appendectomy
0.27%
1/374 • Number of events 1 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/375 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/103 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/110 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/197 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
Vascular disorders
Hopsitalized with DVT
0.00%
0/374 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/375 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/103 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/110 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.51%
1/197 • Number of events 1 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
Gastrointestinal disorders
Hopsitalized for rectal bleeding
0.00%
0/374 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/375 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/103 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.00%
0/110 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.
0.51%
1/197 • Number of events 1 • Adverse events for Phase I interventions were collected over the first 10 weeks. Adverse events for Phase II interventions were collected from 10 weeks through 1 year follow-up.
Note that categories 1 and 2 include adverse events occuring during Phase I or at longer term follow-ups among participants who were not re-randomized in Phase II. Adverse events listed for non-responders who were re-randomized occurred during Phase II treatment or at longer-term follow-up time points.

Other adverse events

Adverse event data not reported

Additional Information

Dr. Julie Fritz

University of Utah

Phone: 801-587-2237

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place