On how many Ds in the last 3Mo did you have a headache, if headache lasted more than 1D, count each D:NRat:3Mo:^Patient:Qn:PhenX
on how many ds in the last 3mo did you have a headache, if headache lasted more than 1d, count each d:nrat:3mo:^patient:qn:phenx
On how many days in the last 3 months did you have a headache, if headache lasted more than 1 day, count each day [PhenX]
on how many days in the last 3 months did you have a headache, if headache lasted more than 1 day, count each day [phenx]