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Predictive validity of a medication adherence measure in an outpatient setting . This study examines the psychometric properties and tests the concurrent and predictive validity of a structured , self-reported medication adherence measure in patients with hypertension . The authors also assessed various psychosocial determinants of adherence , such as knowledge , social support , satisfaction with care , and complexity of the medical regimen . A total of 1367 patients participated in the study ; mean age was 52.5 years , 40.8 % were male , 76.5 % were black , 50.8 % graduated from high school , 26 % were married , and 54.1 % had income < $ 5,000 . The 8-item medication adherence scale was reliable ( alpha=.83 ) and significantly associated with blood pressure control ( P < .05 ) . Using a cutpoint of < 6 , the sensitivity of the measure to identify patients with poor blood pressure control was estimated to be 93 % , and the specificity was 53 % . The medication adherence measure proved to be reliable , with good concurrent and predictive validity in primarily low-income , minority patients with hypertension and might function as a screening tool in outpatient settings with other patient groups .
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Intervention_Educational
structured , self-reported medication adherence measure
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Intervention_Educational
medication adherence
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Outcome_Mental
psychosocial determinants of adherence
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Outcome_Mental
knowledge
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Outcome_Mental
social support
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Outcome_Other
satisfaction with care
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Outcome_Other
complexity of the medical regimen
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Outcome_Physical
blood pressure control
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Outcome_Physical
blood pressure control
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Participant_Condition
hypertension
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Participant_Condition
A total of
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Participant_Sample-size
1367
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Participant_Condition
patients participated in the study ; mean age was
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Participant_Age
52.5 years
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Participant_Condition
, 40.8 % were
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Participant_Sex
male
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Participant_Condition
, 76.5 % were black , 50.8 % graduated from high school , 26 % were married , and 54.1 % had income < $ 5,000 .