期刊
PHARMACOEPIDEMIOLOGY AND DRUG SAFETY
卷 22, 期 12, 页码 1317-1325出版社
WILEY-BLACKWELL
DOI: 10.1002/pds.3528
关键词
refill adherence; oversupply; undersupply; adverse drug reaction; therapeutic failure; self-report; pharmacoepidemiology
资金
- National Corporation of Swedish Pharmacies (Apoteket AB)
PurposeTo assess refill adherence to dispensed oral long-term medications among the adult population and to investigate whether the percentages of self-reported adverse drug reactions (ADRs) and sub-therapeutic effects (STEs) differed for medications with adequate refill adherence, oversupply, and undersupply. MethodSurvey responses on self-reported ADRs and STEs were linked to the Swedish Prescribed Drug Register in a cross-sectional population-based study. Refill adherence to antihypertensive, lipid-lowering, and oral anti-diabetic medications was measured using the continuous measure of medication acquisition (CMA). The percentages of self-reported ADRs and STEs were compared between medications with adequate refill adherence (CMA 0.8-1.2), oversupply (CMA>1.2), and undersupply (CMA<0.8). ResultsThe study included 1827 persons, and the refill adherence was measured for 3014 antihypertensive, 839 lipid lowering, and 253 oral anti-diabetic medications. Overall, 65.7% of the medications had adequate refill adherence, 21.9% oversupply, and 12.4% undersupply. The percentages of self-reported ADRs and STEs were respectively 2.6%, 2.7%, and 2.1% (p>0.5) for ADRs and 1.1%, 1.6%, and 1.5% (p>0.5) for STEs. ConclusionsAdequate refill adherence was found in two thirds of the medication therapies. ADRs and STEs were unexpectedly equally commonly reported for medications with adequate refill adherence, oversupply, and undersupply. These results suggest that a better understanding of patients' refill behaviors and their perceived medication adverse outcomes is needed and should be considered in improving medication management. The impact of individual and healthcare factors that may influence the association between refill adherence and reported medication adverse outcomes should be investigated in future studies. Copyright (c) 2013 John Wiley & Sons, Ltd.
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