Next Article in Journal
Developing Professional Identity in Undergraduate Pharmacy Students: A Role for Self-Determination Theory
Previous Article in Journal
How Two Small Pharmacy Schools’ Competency Standards Compare with an International Competency Framework and How Well These Schools Prepare Students for International Placements
Article Menu
Issue 1 (March) cover image

Export Article

Open AccessBrief Report
Pharmacy 2017, 5(1), 15;

Empirical Assessment of the Impact of Low-Cost Generic Programs on Adherence-Based Quality Measures

Department of Pharmacy Practice & Science, University of Kentucky College of Pharmacy, Lexington, 40508 KY, USA
Department of Pharmaceutical Outcomes & Policy, University of Florida College of Pharmacy, Gainesville, 32610 FL, USA
Author to whom correspondence should be addressed.
Academic Editor: Keith A. Wilson
Received: 13 December 2016 / Revised: 24 February 2017 / Accepted: 6 March 2017 / Published: 8 March 2017
Full-Text   |   PDF [184 KB, uploaded 8 March 2017]


In the United States, federally-funded health plans are mandated to measure the quality of care. Adherence-based medication quality metrics depend on completeness of administrative claims data for accurate measurement. Low-cost generic programs (LCGPs) cause medications fills to be missing from claims data as medications are not adjudicated through a patient’s insurance. This study sought to assess the magnitude of the impact of LCGPs on these quality measures. Data from the 2012–2013 Medical Expenditure Panel Survey (MEPS) were used. Medication fills for select medication classes were classified as LCGP fills and individuals were classified as never, sometimes, and always users of LCGPs. Individuals were classified based on insurance type (private, Medicare, Medicaid, dual-eligible). The proportion of days covered (PDC) was calculated for each medication class and the proportion of users with PDC ≥ 0.80 was reported as an observed metric for what would be calculated based on claims data and a true metric which included missing medication fills due to LCGPs. True measures of adherence were higher than the observed measures. The effect’s magnitude was highest for private insurance and for medication classes utilized more often through LCGPs. Thus, medication-based quality measures may be underestimated due to LCGPs. View Full-Text
Keywords: low-cost generic medications; quality measurement; adherence low-cost generic medications; quality measurement; adherence
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Pauly, N.J.; Talbert, J.C.; Brown, J.D. Empirical Assessment of the Impact of Low-Cost Generic Programs on Adherence-Based Quality Measures. Pharmacy 2017, 5, 15.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Pharmacy EISSN 2226-4787 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top