The Association Between Yoga Use, Physical Function, and Employment in Adults With Rheumatoid Arthritis.

This is a cross-sectional survey, so it cannot show that yoga caused better function or employment; employed or more functional people may be more likely to do yoga. The yoga groups were younger and had more education than the non-yoga group, and after age and education were taken into account, pain and HAQ disability differences were no longer significant. The sample came from private Northern California rheumatology clinics, was mostly white and highly educated, and may reflect a healthy survivor effect. Yoga exposure was self-reported and varied in style, duration, frequency and location; the paper did not test a prescribed programme or measure dose. The paper's description of PROMIS physical function score direction is inconsistent between the methods and results sections. Respondents who did not answer the yoga question were older than the yoga group, so missing data may limit interpretation.

No funding or conflict-of-interest declaration is provided in the supplied text. The study was conducted with oversight from the UCSF institutional review board.

Do not tell a patient that yoga will improve rheumatoid arthritis function or employment. This is a cross-sectional survey, and differences in pain and HAQ disability disappeared after age and education were taken into account, so the findings may reflect who does yoga rather than yoga's effect.