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This measure is designed to support clinical understanding of a patient’s willingness and ability to follow recommended care. The Treatment Adherence Scale is a self-report questionnaire developed to characterize treatment-following behaviors and attitudes in a structured way. It is typically used to inform case conceptualization and to identify potential barriers to adherence that may warrant further clinical follow-up.
The instrument includes 66 items and generally takes about 13 minutes to complete. Content is oriented toward adherence-relevant factors such as motivation, perceived responsibility for treatment, and attitudes toward illness and medical recommendations. The Treatment Adherence Scale was authored by C. Everett Koop and is intended to be interpreted in context alongside clinical interview data, health status, and other relevant measures.