Walking - long distance - difficulty - score change:ScoreDiff:Pt:^Patient:Qn:OPTIMAL
walking - long distance - difficulty - score change:scorediff:pt:^patient:qn:optimal
Walking - long distance - difficulty - score change:ScoreDiff:Pt:^Patient:Qn:OPTIMAL
walking - long distance - difficulty - score change:scorediff:pt:^patient:qn:optimal