PrevOP-PAP intervention: computer-assisted face-to-face intervention
pain
The computer-assisted face-to-face intervention, again delivered by trained study staff, consisted of an introductory section that reminded participants of the program’s goals, four ensuing sections focussing on outcome expectancies, self-efficacy, goal setting, planning, and a feedback section [Outcome expectancies were addressed by providing participants with a calculated pros-cons difference score of outcomes of regular PA. Participants first indicated how much they agreed with five positive (e.g., less joint stiffness, good for overall health) and five negative (e.g., pain during specific activities, too time-consuming) outcome expectancy statements on 6-point Likert scales (not at all true to completely true). Then scores for pros, cons, and a benefit expectation difference were fed back to participants. In case of con scores being larger than pro scores, trained study staff reviewed concerns with participants and asked them to think of activities associated with less cons (BCT: pros and cons (9.2); [