Total interval score change:ScoreDiff:Pt:^Patient:Qn:KOOSJR
total interval score change:scorediff:pt:^patient:qn:koosjr
Total interval score change:Score Difference:To identify measures at a point in time:^Patient:Quantitative:KOOSJR
total interval score change:score difference:to identify measures at a point in time:^patient:quantitative:koosjr