Trial Outcomes & Findings for Virtual Sun Safe Workplaces Ph II (SSW Works) (NCT NCT05774600)
NCT ID: NCT05774600
Last Updated: 2026-03-19
Results Overview
Employees will report frequency of sun protection at work (i.e., sunscreen with SPF 30+, long-sleeved shirts, long pants, hat with wide-brim, sunglasses, shade use, limit midday sun exposure, and have sunscreen, hat and eye protection at all times \[1=never, 5=always\]). SPF 30+ is advised in SSW to account for typical under-application that reduces effective SPF.
Recruitment status
COMPLETED
Study phase
NA
Target enrollment
543 participants
Primary outcome timeframe
Baseline assessment, 1 year assessment
Results posted on
2026-03-19
Participant Flow
Unit of analysis: Site
Participant milestones
| Measure |
SSW Works
SSW Works, is a virtual learning environment (VLE) for automated, comprehensive, on-demand, tailored distribution of the SSW program to private and public employers with outdoor workers. It will be delivered in both English and Spanish to managers and employees who work outdoors to reduce risk for skin cancer.
SSW Works: SSW Works is a behavioral, culturally tailored online intervention for skin cancer prevention amongst outdoor workers in the United States.
|
Minimal Information Control
Workplaces randomized to the control condition will receive a set of printed materials on occupational sun safety (1 mailing per year) as an attention control. These will include posters on personal protection and skin cancer incidence, risk assessment brochure, American Academy of Dermatology SPOT bookmark showing the ABCDEs of melanoma and skin self-examination, and a sun safety tip card from OSHA.
Minimal Information Control: Provision of online materials for skin cancer prevention.
|
|---|---|---|
|
Overall Study
STARTED
|
315 7
|
228 6
|
|
Overall Study
Managers
|
81 7
|
57 6
|
|
Overall Study
Employees
|
234 7
|
171 6
|
|
Overall Study
COMPLETED
|
164 7
|
137 6
|
|
Overall Study
NOT COMPLETED
|
151 0
|
91 0
|
Reasons for withdrawal
Withdrawal data not reported
Baseline Characteristics
The number analyzed differs from the overall population because age was not reported for 15 participants in the intervention group and 12 in the control group (27 total).
Baseline characteristics by cohort
| Measure |
SSW Works
n=315 Participants
SSW Works, is a virtual learning environment (VLE) for automated, comprehensive, on-demand, tailored distribution of the SSW program to private and public employers with outdoor workers. It will be delivered in both English and Spanish to managers and employees who work outdoors to reduce risk for skin cancer.
SSW Works: SSW Works is a behavioral, culturally tailored online intervention for skin cancer prevention amongst outdoor workers in the United States.
|
Minimal Information Control
n=228 Participants
Workplaces randomized to the control condition will receive a set of printed materials on occupational sun safety (1 mailing per year) as an attention control. These will include posters on personal protection and skin cancer incidence, risk assessment brochure, American Academy of Dermatology SPOT bookmark showing the ABCDEs of melanoma and skin self-examination, and a sun safety tip card from OSHA.
Minimal Information Control: Provision of online materials for skin cancer prevention.
|
Total
n=543 Participants
Total of all reporting groups
|
|---|---|---|---|
|
Age, Categorical
<=18 years
|
0 Participants
n=300 Participants • The number analyzed differs from the overall population because age was not reported for 15 participants in the intervention group and 12 in the control group (27 total).
|
11 Participants
n=216 Participants • The number analyzed differs from the overall population because age was not reported for 15 participants in the intervention group and 12 in the control group (27 total).
|
11 Participants
n=516 Participants • The number analyzed differs from the overall population because age was not reported for 15 participants in the intervention group and 12 in the control group (27 total).
|
|
Age, Categorical
Between 18 and 65 years
|
294 Participants
n=300 Participants • The number analyzed differs from the overall population because age was not reported for 15 participants in the intervention group and 12 in the control group (27 total).
|
200 Participants
n=216 Participants • The number analyzed differs from the overall population because age was not reported for 15 participants in the intervention group and 12 in the control group (27 total).
|
494 Participants
n=516 Participants • The number analyzed differs from the overall population because age was not reported for 15 participants in the intervention group and 12 in the control group (27 total).
|
|
Age, Categorical
>=65 years
|
6 Participants
n=300 Participants • The number analyzed differs from the overall population because age was not reported for 15 participants in the intervention group and 12 in the control group (27 total).
|
5 Participants
n=216 Participants • The number analyzed differs from the overall population because age was not reported for 15 participants in the intervention group and 12 in the control group (27 total).
|
11 Participants
n=516 Participants • The number analyzed differs from the overall population because age was not reported for 15 participants in the intervention group and 12 in the control group (27 total).
|
|
Age, Continuous
|
44.6 years
STANDARD_DEVIATION 12.4 • n=300 Participants • The number analyzed differs from the overall population because 27 participants did not report their age.
|
42.7 years
STANDARD_DEVIATION 14.2 • n=216 Participants • The number analyzed differs from the overall population because 27 participants did not report their age.
|
43.8 years
STANDARD_DEVIATION 13.2 • n=516 Participants • The number analyzed differs from the overall population because 27 participants did not report their age.
|
|
Sex: Female, Male
Female
|
85 Participants
n=306 Participants • The number analyzed differs from the overall because 14 participants did not report their gender.
|
85 Participants
n=223 Participants • The number analyzed differs from the overall because 14 participants did not report their gender.
|
170 Participants
n=529 Participants • The number analyzed differs from the overall because 14 participants did not report their gender.
|
|
Sex: Female, Male
Male
|
221 Participants
n=306 Participants • The number analyzed differs from the overall because 14 participants did not report their gender.
|
138 Participants
n=223 Participants • The number analyzed differs from the overall because 14 participants did not report their gender.
|
359 Participants
n=529 Participants • The number analyzed differs from the overall because 14 participants did not report their gender.
|
|
Ethnicity (NIH/OMB)
Hispanic or Latino
|
39 Participants
n=315 Participants
|
13 Participants
n=228 Participants
|
52 Participants
n=543 Participants
|
|
Ethnicity (NIH/OMB)
Not Hispanic or Latino
|
243 Participants
n=315 Participants
|
195 Participants
n=228 Participants
|
438 Participants
n=543 Participants
|
|
Ethnicity (NIH/OMB)
Unknown or Not Reported
|
33 Participants
n=315 Participants
|
20 Participants
n=228 Participants
|
53 Participants
n=543 Participants
|
|
Race (NIH/OMB)
American Indian or Alaska Native
|
3 Participants
n=315 Participants
|
1 Participants
n=228 Participants
|
4 Participants
n=543 Participants
|
|
Race (NIH/OMB)
Asian
|
5 Participants
n=315 Participants
|
5 Participants
n=228 Participants
|
10 Participants
n=543 Participants
|
|
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
|
1 Participants
n=315 Participants
|
0 Participants
n=228 Participants
|
1 Participants
n=543 Participants
|
|
Race (NIH/OMB)
Black or African American
|
7 Participants
n=315 Participants
|
20 Participants
n=228 Participants
|
27 Participants
n=543 Participants
|
|
Race (NIH/OMB)
White
|
257 Participants
n=315 Participants
|
177 Participants
n=228 Participants
|
434 Participants
n=543 Participants
|
|
Race (NIH/OMB)
More than one race
|
8 Participants
n=315 Participants
|
4 Participants
n=228 Participants
|
12 Participants
n=543 Participants
|
|
Race (NIH/OMB)
Unknown or Not Reported
|
34 Participants
n=315 Participants
|
21 Participants
n=228 Participants
|
55 Participants
n=543 Participants
|
PRIMARY outcome
Timeframe: Baseline assessment, 1 year assessmentPopulation: Participants from site 13 were excluded for analysis due to a randomization error. Participants with missing outcome data were also excluded.
Employees will report frequency of sun protection at work (i.e., sunscreen with SPF 30+, long-sleeved shirts, long pants, hat with wide-brim, sunglasses, shade use, limit midday sun exposure, and have sunscreen, hat and eye protection at all times \[1=never, 5=always\]). SPF 30+ is advised in SSW to account for typical under-application that reduces effective SPF.
Outcome measures
| Measure |
SSW Works
n=140 Participants
SSW Works, is a virtual learning environment (VLE) for automated, comprehensive, on-demand, tailored distribution of the SSW program to private and public employers with outdoor workers. It will be delivered in both English and Spanish to managers and employees who work outdoors to reduce risk for skin cancer.
SSW Works: SSW Works is a behavioral, culturally tailored online intervention for skin cancer prevention amongst outdoor workers in the United States.
|
Minimal Information Control
n=170 Participants
Workplaces randomized to the control condition will receive a set of printed materials on occupational sun safety (1 mailing per year) as an attention control. These will include posters on personal protection and skin cancer incidence, risk assessment brochure, American Academy of Dermatology SPOT bookmark showing the ABCDEs of melanoma and skin self-examination, and a sun safety tip card from OSHA.
Minimal Information Control: Provision of online materials for skin cancer prevention.
|
|---|---|---|
|
Change From Baseline Employee Sun Protection Practices at 1 Year
Pre-Test
|
3.55 score on a scale
Standard Deviation 0.699
|
3.30 score on a scale
Standard Deviation 0.722
|
|
Change From Baseline Employee Sun Protection Practices at 1 Year
Post-Test
|
3.71 score on a scale
Standard Deviation 0.661
|
3.46 score on a scale
Standard Deviation 0.599
|
PRIMARY outcome
Timeframe: Baseline assessment, 1 year assessmentPopulation: Participants from site 13 were excluded due to a randomization error. Participants with missing outcome data were also excluded.
The percentage change in employees reporting any sunburn in the last 3 months on the job from pretest to posttest.
Outcome measures
| Measure |
SSW Works
n=141 Participants
SSW Works, is a virtual learning environment (VLE) for automated, comprehensive, on-demand, tailored distribution of the SSW program to private and public employers with outdoor workers. It will be delivered in both English and Spanish to managers and employees who work outdoors to reduce risk for skin cancer.
SSW Works: SSW Works is a behavioral, culturally tailored online intervention for skin cancer prevention amongst outdoor workers in the United States.
|
Minimal Information Control
n=169 Participants
Workplaces randomized to the control condition will receive a set of printed materials on occupational sun safety (1 mailing per year) as an attention control. These will include posters on personal protection and skin cancer incidence, risk assessment brochure, American Academy of Dermatology SPOT bookmark showing the ABCDEs of melanoma and skin self-examination, and a sun safety tip card from OSHA.
Minimal Information Control: Provision of online materials for skin cancer prevention.
|
|---|---|---|
|
Percentage Change From Baseline Employee Sunburn Prevalence at 1 Year
Pre-Test
|
90 Participants
|
91 Participants
|
|
Percentage Change From Baseline Employee Sunburn Prevalence at 1 Year
Post-Test
|
35 Participants
|
23 Participants
|
Adverse Events
SSW Works
Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths
Minimal Information Control
Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths
Serious adverse events
Adverse event data not reported
Other adverse events
Adverse event data not reported
Additional Information
Results disclosure agreements
- Principal investigator is a sponsor employee
- Publication restrictions are in place