At what age did you first notice a hearing difficulty:Time:Pt:^Patient:Qn:PhenX
at what age did you first notice a hearing difficulty:time:pt:^patient:qn:phenx
At what age did you first notice a hearing difficulty:Time:To identify measures at a point in time:^Patient:Quantitative:PhenX
at what age did you first notice a hearing difficulty:time:to identify measures at a point in time:^patient:quantitative:phenx