medCSA {medAdherence}R Documentation

Continuous Single-interval measure of medication Availability

Description

medCSA function calculates the Single-interval medication availability.

Continuous Single-interval measure of medication Availability (CSA) was calculated by the days' supply of a medication divided by the number of days in the interval from the dispensation date up to, but not include, the next dispensation date (or the study end).

Usage

medCSA(df=data)

Arguments

df a dataframe created by postData funtion

Author(s)

Xiangyang Ye, Pharmacotherapy Outcomes Research Center, University of Utah

References

Steiner, JG and Prochazka, AV. The Assessment of Refill Compliance Using Pharmacy Records: Methods, Validity, and Applications. Journal of Clinical Epidemiology 1997;50:105-116

Hess, LM, Raebel, MA, et al. Measurement of Adherence in Pharmacy Administrative Databases: A Proposal for Statndard Definitions and Preferred Measures The Annals of Pharmacotherapy 2006;40:1280-1288

Examples

data(cmos)
predt <- preRxData(df=cmos,id=ptid,rxDate=rxDay,daySupply=supplies)
postdt <-postRxData(predt)
medCSA(postdt)

[Package medAdherence version 1.01 Index]