Concurrent and Predictive Validity of a Self-reported Measure of Medication Adherence
作者:
Donald Morisky,
Lawrence Green,
David Levine,
期刊:
Medical Care
(OVID Available online 1986)
卷期:
Volume 24,
issue 1
页码: 67-74
ISSN:0025-7079
年代: 1986
出版商: OVID
关键词: concurrent validity;predictive validity;compliance;blood pressure control;provider-patient interaction;chronic disease
数据来源: OVID
摘要:
Adherence to the medical regimen continues to rank as a major clinical problem in the management of patients with essential hypertension, as in other conditions treated with drugs and life-style modification. This article reviews the psychometric properties and tests the concurrent and predictive validity of a structured four-item self-reported adherence measure (alpha reliability = 0.61), which can be easily integrated into the medical visit. Items in the scale address barriers to medication-taking and permit the health care provider to reinforce positive adherence behaviors. Data on patient adherence to the medical regimen were collected at the end of a formalized 18-month educational program. Blood pressure measurements were recorded throughout a 3-year follow-up period. Results showed the scale to demonstrate both concurrent and predictive validity with regard to blood pressure control at 2 years and 5 years, respectively. Seventy-five percent of the patients who scored high on the four-item scale at year 2 had their blood pressure under adequate control at year 5, compared with 47% under control at year 5 for those patients scoring low (P< 0.01).
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