PDC: Stata module for computing the Proportion of Days Covered (of a medication)

Ariel Linden

Statistical Software Components from Boston College Department of Economics

Abstract: The Proportion of days covered (PDC) is a widely-used measure of adherence (also referred to as compliance) to a medication regimen. It utilizes administrative pharmacy claims data to assess the number of days in an observation period in which an individual has medication on hand. PDC computes the proportion of days covered under a large number of scenarios including for a single individual or multiple individuals, with prescriptions filled for one medication or multiple medications. Moreover, PDC provides the user with tremendous flexibility in specifying the observation period under study.

Language: Stata
Requires: Stata version 11
Keywords: proportion of days covered; Medication Possession Ratio; adherence; compliance; pharmacy claims (search for similar items in EconPapers)
Date: 2018-10-27, Revised 2019-04-21
Note: This module should be installed from within Stata by typing "ssc install pdc". The module is made available under terms of the GPL v3 (https://www.gnu.org/licenses/gpl-3.0.txt). Windows users should not attempt to download these files with a web browser.
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Downloads: (external link)
http://fmwww.bc.edu/repec/bocode/p/pdc.ado program code (text/plain)
http://fmwww.bc.edu/repec/bocode/p/pdc.sthlp help file (text/plain)
http://fmwww.bc.edu/repec/bocode/m/medadheredata.dta sample data file (application/x-stata)

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