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