Percent impairment - difficulty:Prctl:Pt:^Patient:Qn:OPTIMAL
percent impairment - difficulty:prctl:pt:^patient:qn:optimal
Percent impairment - difficulty:Percentile:To identify measures at a point in time:^Patient:Quantitative:OPTIMAL
percent impairment - difficulty:percentile:to identify measures at a point in time:^patient:quantitative:optimal