Qualitative Assessments of Adherence
The diagnosis of non-adherence to prescribed medications is a real challenge in clinical medicine. Besides objective methods such as measurements of drug concentrations in plasma or urine and electronic monitoring of adherence, several qualitative approaches are available, which are based on self-report medication adherence scales or specific questionnaires. In a recent systematic review, more than 43 adherence scales have been reported that have been used essentially in chronic diseases including essential hypertension. Although self-reports and questionnaires are considered to have a low reliability to detect a poor medication-taking process, they do provide additional information, which cannot be obtained with objective measures. Thus, adequately validated questionnaires can identify relevant barriers and beliefs to a good medication-taking behavior. Therefore, these approaches should be considered as complementary to the objective measures of adherence and should perhaps not be totally disregarded as they often are.
KeywordsSelf-report scales Questionnaires Morisky medication Behavior Barriers Beliefs
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