Association Between Public Trust and Provider Specialty Among Physicians With Financial Conflicts of Interest

To characterize public perception of physicians' conflicts of interest (COIs) across medical and surgical specialties.

A cross-sectional 6-arm randomized survey of a nonprobability sample from Amazon's Mechanical Turk occurred on December 11 to 16, 2018. Survey respondents were randomly assigned to vignettes that varied the physician specialty with COI. The primary outcome was mean difference in Mayer Trust, and the secondary outcome included the proportion who desire to discontinue care.

There were 1729 of 1920 respondents who completed the experiment (90.1% completion rate). Respondents were male (52.5%; n=907), white (71.4%; n=1234), and between the ages of 25 and 44 years (70.9%; n=1227). Mean ± SD Mayer Trust across the 6 specialties was 3.7±.60, with the only between-specialty differences observed for psychiatry compared with the other specialties (F=5.4; P<.001). The median dollar amount that would affect respondents' trust in a physician was $5000 (interquartile range, $100-$100,000). A total of 75.1% (n=1298) of respondents desired COI information, with 41.6% (n=720) discontinuing care. Age older than 34 years (adjusted odds ratio [aOR], 0.7; 95%, CI, 0.49-0.99; P=.047), nonwhite race (aOR, 1.3; 95% CI, 1.02-1.6; P=.03), educational attainment of 4 or more years of college (aOR, 1.31; 95% CI, 1.05-1.6; P=.016), and physician specialty as a psychiatrist (aOR, 1.5; 95% CI, 1.03-2.2; P=.034) were predictors for discontinuing care.

Public COI disclosure is a common method for managing financial conflicts. Although survey respondents were more likely to discontinue care with a physician with COI, they will act on this knowledge of COI differently depending on the specialty of the physician. The finding that psychiatry is an outlier may be a chance finding that warrants further confirmation. Continued efforts to ensure best practices for disclosure are required.