Effect of Diagnostic Imaging Utilization Reports

Summary

Diagnostic imaging (DI) tests (for example, x-ray tests, ultrasounds, CT scans, or MRIs) are used by health care providers to help diagnose patient illness, but decisions regarding when these tests should be ordered are subjective. As a result, some physicians order these tests more than others. Ordering rates between clinicians seeing similar kinds of patients have been shown to be considerably different, suggesting that many of the tests are unnecessary. DI currently accounts for about 6.6% of Canadian hospital budgets, but this percentage may be much higher in Newfoundland where test ordering rates are almost twice the national average. However, cost is not the only concern. Over-testing can lead to further unnecessary testing to follow-up on harmless findings, and in the case of CT, large doses of potentially harmful radiation. We suspect that many clinicians are not aware that they order more DI tests than their peers. We will therefore develop a "report card" for family physicians in the province that shows them how many tests they are ordering compared to other physicians in the region. We expect that physicians who are over-ordering DI tests will reduce the number of tests they order after receiving their report cards. This is a low-cost way to potentially prevent expensive over-ordering of DI tests that can easily be implemented in the province's other health regions and elsewhere. The Quality of Care Newfoundland and Labrador (QCNL) organization in the province currently provides feedback reports and in-person detailing sessions to physicians, but the effectiveness of these interventions has not been studied.

Conditions

• Diagnostic Imaging Utilization

Interventions

OTHER

Usual QCNL DI utilization report

See arm descriptions.

OTHER

New DI utilization report

See arm descriptions.

OTHER

Detailing

In-person detailing, usually with a small group of family physicians and a peer (physician) facilitator to discuss the topic over a 30-60 minute period.

Sponsors & Collaborators

• NL SUPPORT Strategy for Patient-Oriented Research

  collaborator UNKNOWN

• Memorial University of Newfoundland

  lead OTHER

Principal Investigators

• Kris Aubrey-Bassler, MD, CCFP(EM) · Primary Healthcare Research Unit, Memorial University

Study Design

Allocation

RANDOMIZED

Purpose

HEALTH_SERVICES_RESEARCH

Masking

TRIPLE

Model

FACTORIAL

Eligibility

Sex

ALL

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2019-11-15

Primary Completion

2020-12-31

Completion

2020-12-31

Countries

• Canada

Study Locations