medDTMPR {medAdherence}R Documentation

Dual Therapy Medication Possession Ratio

Description

medDTMPR function calculates the Dual Therapy Medication Possession Ratio.

Dual Therapy Medication Possession Ratio (DTMPR) were computed taking the ratio of the sum of days' supplies (devided by 2) to the intervals elapsed between date of first prescription refill and last prescription refill plus the days' supply of last refill.

Same as MPR, the ratio alone can't be combined across patients due to different observation days (denomitor). DTMPR may exceed 100% due to early refills and/or polypharmacy. Very commonly, if DTMPR>100%, it will be truncated to 100%.

Usage

medDTMPR(df=data,followUpDays=NA,truncated="yes", digits=2)

Arguments

df a dataframe created by preData funtion
followUpDays days of follow up
truncated limit MPR to 100% or not. "yes" is the default
digits round to decimals. Default is 2

Author(s)

Xiangyang Ye, Pharmacotherapy Outcomes Research Center, University of Utah

References

Vanderpoel, DR. , Hussein, MA, et al. Adherence to a Fixed-Dose Combination of Rosiglitazone Maleate/Metformin Hydrochloride in Subjects with Type 2 Diabetes Mellitus: A Retorspective Database Analysis Clinical Therapeutics 2004;26:2066-2075

Examples

cmos <- rxExampledt()
predt <- preRxData(df=cmos,id=ptid,rxDate=rxDay,daySupply=supplies)
medDTMPR(predt)

[Package medAdherence version 1.02 Index]