Cited by 50Medication Adherence and ComplianceBlood Pressure and Hypertension StudiesPharmacy and Medical Practices

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Are two commonly used self-report questionnaires useful for identifying antihypertensive medication nonadherence?

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Abstract

OBJECTIVE: Medication nonadherence is a major cause of uncontrolled hypertension, but clinicians are poor at judging adherence, and the gold standard for measuring adherence, electronic monitoring, is rarely available in clinical settings. Self-report questionnaires (SRQs), by contrast, are inexpensive, easy to administer, and hence, may be useful for 'diagnosing' nonadherence. In this study, we evaluated the validity of two commonly used medication adherence SRQs among patients with uncontrolled hypertension, using electronic pillbox measurement as the gold standard. METHODS: A total of 149 patients with uncontrolled hypertension had adherence to their antihypertensive medication regimen monitored using a four-compartment electronic pillbox (MedSignals) between two primary care visits (median 50 days). Participants completed the 8-item Morisky Medication Adherence Scale (MMAS-8) and the Visual Analog Scale (VAS) at the second visit. Likelihood ratios were calculated using less than 80% correct dosing adherence by electronic measurement as the gold standard. RESULTS: SRQ scores indicating low adherence (MMAS-8 <6 and VAS <80%, 23 and 9% of participants, respectively) had likelihood ratios of 2.00 [95% confidence interval (CI) 1.10-3.65] and 7.72 (95% CI 1.77-33.6), respectively, for detecting nonadherence compared to electronic measurement. SRQ scores indicating highest adherence (MMAS-8 = 8 and VAS = 100%, 43 and 61% of participants, respectively) had likelihood ratios of 0.55 (95% CI 0.35-0.85) and 0.76 (95% CI 0.57-1.01), respectively, for detecting nonadherence. CONCLUSION: The MMAS-8 and VAS are modestly useful in identifying antihypertensive medication nonadherence. Other tools, including electronic measurement, may be needed to guide titration of antihypertensive medications among patients with uncontrolled hypertension.

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Metadata

Authors
Gallagher, B. D., Muntner, P., Moise, N., Lin, J. J., & Kronish, I. M.
Affiliations
  • Columbia University Irving Medical Center (US)
  • University of Alabama at Birmingham (US)
  • Icahn School of Medicine at Mount Sinai (US)
Corresponding author
Kronish, Ian M.
Venue
Journal of Hypertension
Published
2015-05
Volume
33
Issue
5
Pages
1108-1113
ISSN
0263-6352 (ISSN-L)
OpenAlex
W2078629068
Cited by
50
References
4
Citations by year
2026: 1 · 2025: 2 · 2024: 2 · 2023: 2 · 2022: 8 · 2021: 5 · 2020: 5 · 2019: 7 · 2018: 8 · 2017: 5 · 2016: 5
FWCI
7.01
Type
journal article
Language
en
Open access
Locations
  • Journal of Hypertension (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Columbia Academic Commons (Columbia University)
Funders
  • National Institutes of Health (UL1TR000040, 5k07ca166462-05, KL2TR001874)
  • National Heart, Lung, and Blood Institute (P01HL047540, K23HL098359, T35HL007616)
  • National Cancer Institute (K07 CA-166462)
  • National Center for Advancing Translational Sciences
Topics
  • Health Sciences › Medicine › Family Practice › Medication Adherence and Compliance
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Blood Pressure and Hypertension Studies
  • Health Sciences › Health Professions › Pharmacy › Pharmacy and Medical Practices
Keywords
medication non-adherence, antihypertensive drugs, self-report questionnaire, Morisky Medication Adherence Scale, visual analogue scale, uncontrolled hypertension, diagnostic validity, likelihood ratios, adherence measurement
MeSH terms
Aged, Antihypertensive Agents, Female, Humans, Hypertension, Male, Middle Aged, Surveys and Questionnaires, Medication Adherence, Self Report

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