Brox JI, et al. - A secondary analysis of a randomised controlled trial was conducted to compare days on sick leave and evaluate predictors of return to work following shoulder surgery. Researchers enrolled a total of 114 patients with type II superior labral tear from anterior to posterior of the shoulder. They obtained sick leave from national registers for the last year before and 2 years following surgery. International diagnostic codes were applied to obtain total and shoulder related number of days on sick leave. The difference-in-difference approach was used to compare the differences in the change in mean work days on sick leave between groups over time, backwards logistic regression and lasso regression to assess predictors. This study's findings reveal that change in mean work days on sick leave comparing sham surgery, labral repair and biceps tenodesis, was not significantly different. The data consider that sick leave, symptoms of anxiety and depression, and manual work at inclusion prognosticated work status 2 years after surgery.