Musculoskeletal shoulder pain: Home exercise frequency and adherence to appointments are not mediators of outcome.

Objective: To investigate whether appointment adherence and frequency of home exercises mediates the association of baseline i) pain self-efficacy (PSE) or ii) patient expectation of recovery, with outcome at 6 months.

Design: Multicentre longitudinal cohort study.

Methods: Six-month outcome data (SPADI, QuickDASH) were provided by 810 of 1030 recruited participants.