Positive airway pressure device usage:Time:1Mo^mean:^Patient:Qn
positive airway pressure device usage:time:1mo^mean:^patient:qn
Positive airway pressure device usage:Time:1 month^Mean of all of the values observed on the interval:^Patient:Quantitative
positive airway pressure device usage:time:1 month^mean of all of the values observed on the interval:^patient:quantitative