3.3.1 Outcome measures: Outcome measures were chosen to reflect our primary aim of determining the impact of the MBSR program on physical function and pain. To reflect our secondary aim of determining the impact of the MBSR program on the multidimensional aspects of chronic pain, comprehensive psychosocial, sleep and appetite measures were decided on. Outcome measures were also chosen because of their demonstrated feasibility, reliability, and validity in older adults with chronic pain.