During the past 3Mo, how many severe or very unpleasant attacks of chest trouble have you had:NRat:3Mo:^Patient:Qn:PhenX
during the past 3mo, how many severe or very unpleasant attacks of chest trouble have you had:nrat:3mo:^patient:qn:phenx
During the past 3Mo, how many severe or very unpleasant attacks of chest trouble have you had:Number=Count/Time:3 months:^Patient:Quantitative:PhenX
during the past 3mo, how many severe or very unpleasant attacks of chest trouble have you had:number=count/time:3 months:^patient:quantitative:phenx