Assessing activity participation in the ACL injured population: a systematic review of activity rating scale measurement properties

screened for appropriateness for one or more of the following criteria; describing tool development; detailing instructions for use of the tool; or reporting at least one psychometric property. Full text articles were obtained for all psychometric studies. Critical appraisal and data extraction were completed using published tools designed specifically for psychometric studies; a detailed description of their use has been previously described. Both tools have been used in recent reviews of patient-reported outcome instruments; for neck pain, shoulder function, and obesity management. They have been investigated for inter-rater agreement (k50.43 to 0.92) and inter-rater reliability (ICC50.91: 95%CI50.86–0.94). Appraisal and extraction processes were completed separately, by two independent reviewers (RL and KB). If disagreement was irresolvable by a consensus on a second review of the manuscripts, plans were made for a third reviewer to be consulted and con-