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Institute of Psychiatry, London
Department of Psychiatry, Yale University, New Haven, Connecticut, USA
Institute of Psychiatry, London
Institute of Psychiatry/Maudsley Hospital, London
Queen Mary College, University of London
Institute of Psychiatry, London, UK
Correspondence: Professor Matthew Hotopf, Academic Department of Psychological Medicine, Institute of Psychiatry, Weston Education Centre, 10 Cutcombe Road, London SE5 9RJ, UK. Tel: +44(0)2078480778; fax: ++44(0)2078485408; e-mail: m.hotopf{at}iop.kcl.ac.uk
Declaration of interest None. The study was funded by the Wellcome Trust.
See pp.
372378, this issue.
Background Little is known about the proportion of psychiatric in-patients who lackcapacity to make treatment decisions, or the associations of lackof capacity.
Aims To determine the prevalence of psychiatric in-patients who lack capacity to make decisions about current treatment and to identify demographic and clinical associations with lackof mental capacity.
Method Patients (n=112) were interviewed soon after admission to hospital and a binaryjudgement of capacity was made, guided by the MacArthur Competence Tool for Treatment. Demographic and clinical information was collected from an interview and case notes.
Results Of the 112 participants, 49 (43.8%) lacked treatment-related decisional capacity. Mania and psychosis, poor insight, delusions and Black and minority ethnic group were associated with mentalincapacity. Of the 49 patients lacking capacity, 30 (61%) were detained under the Mental Health Act 1983. Of the 63 with capacity, 6 (9.5%) were detained.
Conclusions Lack of treatment-related decisional capacity is a common but by no means inevitable correlate of admission to a psychiatric in-patient unit.
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