Diagnostic Labels for Rotator Cuff Disease Can Increase People's Perceived Need for Shoulder Surgery: An Online Randomized Controlled Trial

OBJECTIVE: To investigate whether different labels for rotator cuff disease influence people's perceived need for surgery. DESIGN: Randomized controlled experiment. METHODS: Participants with and without shoulder pain read a vignette describing a patient with rotator cuff disease and were randomized to 1 of 6 terms describing rotator cuff disease: subacromial impingement syndrome, rotator cuff tear, bursitis, rotator cuff-related shoulder pain, shoulder sprain, and episode of shoulder pain. Perceived need for shoulder surgery was the primary outcome. Secondary outcomes included perceived need for imaging, an injection, a second opinion, and to see a specialist; perceived seriousness of the condition; recovery expectations; and perceived impact on work attendance. Using a Bonferroni correction (significance, P<.003), adjusted between-group mean differences and 99.67% confidence intervals (CIs) were obtained using a 1-way analysis of covariance. RESULTS: One thousand three hundred eight (80% of 1626) responses were analyzed. Participants' mean +/- SD age was 40.3 +/- 16.0 years, and 59% were women. Mean perceived need for surgery (0-10 scale) was low and slightly higher among those assigned to the rotator cuff tear label compared to the bursitis label (2.6 versus 2.1; adjusted mean difference, 0.7; 99.67% CI: 0.0, 1.4). Mean perceived need for imaging (0-10) was moderate and slightly higher among those assigned to the rotator cuff tear (4.7 versus 3.7; adjusted mean difference, 1.0; 99.67% CI: 0.2, 1.9) and subacromial impingement syndrome labels (4.7 versus 3.7; adjusted mean difference, 1.0; 99.7% CI: 0.1, 1.9) compared to the bursitis label. CONCLUSION: There were small differences in the perceived need for surgery and imaging between some labels, which could be important at the population level.

Automated summary

When different labels are used to describe rotator cuff disease, there are small differences in the perceived need for surgery and imaging, which could potentially have important implications at the population level.