Assessment of mental capacity to consent to treatment in anorexia nervosa: A comparison of clinical judgment and MacCAT-T and consequences for clinical practice

International Journal of Law and Psychiatry
Isis F F M ElzakkersAnnemarie A van Elburg

Abstract

Informed consent requires adequate mental capacity to consent to treatment. Mental capacity (MC) to consent to treatment refers to the ability to make medical decisions. MC is assessed in a general psychiatric interview, but this clinical assessment is known to overestimate mental capacity in patients and the inter rater reliability is low. The MacArthur Competence Assessment Tool for Treatment (MacCAT-T) has emerged as the gold standard to assess mental capacity to consent to treatment. The MacCAT-T is a semi-structured interview designed to aid clinicians in this assessment and has shown good inter rater reliability in patients with schizophrenia and other mental disorders, but has hardly been studied in patients with anorexia nervosa. Patients with anorexia nervosa (AN) regularly avoid treatment, even when severely ill and discussion includes assessing MC to consent to treatment. The aim of this study is to compare clinical judgment and the MacCAT-T in evaluating MC in patients with AN which in turn may influence use of the MacCAT-T in daily practice. In a sample of 70 consecutively referred severely ill patients with AN with a mean BMI of 15.5 kg/m2 and a mean duration of illness of 8.6 years, clinical assessment of MC by e...Continue Reading

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Anorexia Nervosa

Anorexia nervosa (AN) is a psychiatric condition characterized by severe weight loss and secondary problems associated with malnutrition. Here is the latest research on AN.