Cited by 30Healthcare Decision-Making and RestraintsEating Disorders and BehaviorsEthics and bioethics in healthcare

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

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Elzakkers, Isis F.F.M., Danner, Unna N., Grisso, Thomas, Hoek, Hans W., van Elburg, Annemarie A.·2018·International Journal of Law and Psychiatry

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/m 2 and a mean duration of illness of 8.6 years, clinical assessment of MC by experienced psychiatrists and the outcome of the MacCAT-T interview were compared. Agreement (κ-value) was calculated. Agreement between clinical assessment and outcome of the MacCAT-T was questionable (κ 0.23). Unlike in other psychiatric populations, clinicians judged a high proportion of patients with AN as having diminished MC. The MacCAT-T can be useful in assessing MC in AN when used in addition to clinical judgment to aid clinicians in complex cases. Why clinicians judge a relatively high proportion of patients with AN as having diminished MC, in contrast to lower proportions in other psychiatric disorders, is an area in need of further research.

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  1. Berghmans, R., Dickenson, D., & Meulen, R. T. (2004). Mental capacity: In search of alter- native perspectives. Health Care Analysis: HCA: Journal of Health Philosophy and Policy, 12, 251-263 (discussion 265-72).

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Authors
Elzakkers, I. F. F. M., Danner, U. N., Grisso, T., Hoek, H. W., & van Elburg, A. A.
Affiliations
  • Altrecht GGZ (NL)
  • Utrecht University (NL)
  • University of Massachusetts Chan Medical School (US)
  • University Medical Center Groningen (NL)
Venue
International Journal of Law and Psychiatry
Publisher
Elsevier BV
Published
2018-05
Volume
58
Pages
27-35
ISSN
0160-2527 (ISSN-L)
OpenAlex
W2792046331
Cited by
30
References
87
Citations by year
2026: 1 · 2025: 3 · 2024: 9 · 2023: 4 · 2022: 7 · 2021: 1 · 2020: 3 · 2019: 2
FWCI
1.77
Type
journal article
Language
en
Open access
Locations
  • International Journal of Law and Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
  • Utrecht University Repository (Utrecht University) (submittedVersion, other-oa)
  • University of Groningen research database (University of Groningen / Centre for Information Technology) (submittedVersion)
  • Utrecht University Repository (Utrecht University) (submittedVersion)
Funders
Nuts Ohra Foundation (1104-017)
Topics
  • Social Sciences › Psychology › Clinical Psychology › Healthcare Decision-Making and Restraints
  • Social Sciences › Psychology › Clinical Psychology › Eating Disorders and Behaviors
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Ethics and bioethics in healthcare
Keywords
anorexia nervosa, decision-making capacity, informed consent, clinical judgment, inter-rater reliability, treatment refusal, severe eating disorders
MeSH terms
Adult, Anorexia Nervosa, Female, Humans, Informed Consent, Judgment, Patient Acceptance of Health Care, Surveys and Questionnaires, Mental Competency, Young Adult

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