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BMC Psychiatry
Published in: BMC Psychiatry 1/2016

Open Access 01-12-2016 | Research article

Hospitalisation of severely mentally ill patients with and without problematic substance use before and during Assertive Community Treatment: an observational cohort study

Authors: Hanne Clausen, Torleif Ruud, Sigrun Odden, Jūratė Šaltytė Benth, Kristin Sverdvik Heiervang, Hanne Kilen Stuen, Helen Killaspy, Robert E. Drake, Anne Landheim

Published in: BMC Psychiatry | Issue 1/2016

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Abstract

Background

Co-occurring substance use increases the risk of hospitalisation in people with severe mental illness, whereas Assertive Community Treatment (ACT) generally reduces hospitalisation in patients with severe mental illness and high inpatient service use. Because the superiority of ACT over standard services amongst patients with problematic substance use is uncertain, the present study examined inpatient service use amongst patients with and without problematic substance use in the 2 years before and the 2 years after they enrolled into ACT teams.

Methods

This naturalistic observational study included 142 patients of 12 different ACT teams throughout Norway. The teams assessed the patients upon enrolment into ACT using clinician-rated and self-reported questionnaires. We obtained hospitalisation data from the Norwegian Patient Register for the 2 years before and the 2 years after enrolment into ACT. We used linear mixed models to assess changes in hospitalisation and to explore associations between problematic substance use and changes in hospitalisation, controlling for socio-demographic and clinical characteristics.

Results

A total of 84 (59 %) participants had problematic substance use upon enrolment into the ACT teams. In the 2 years after ACT enrolment both participants with and without problematic substance use experienced a reduction in total inpatient days. Those with problematic substance use also had fewer involuntary inpatient days. Exploratory analyses suggested that symptom severity and functioning level interacted with problematic substance use to influence change in total inpatient days.

Conclusion

These findings may suggest that ACT teams successfully support people with complex mental health problems in the community, including those with problematic substance use, and thereby contribute to a reduction in inpatient service use.
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Metadata
Title
Hospitalisation of severely mentally ill patients with and without problematic substance use before and during Assertive Community Treatment: an observational cohort study
Authors
Hanne Clausen
Torleif Ruud
Sigrun Odden
Jūratė Šaltytė Benth
Kristin Sverdvik Heiervang
Hanne Kilen Stuen
Helen Killaspy
Robert E. Drake
Anne Landheim
Publication date
01-12-2016
Publisher
BioMed Central
Published in
BMC Psychiatry / Issue 1/2016
Electronic ISSN: 1471-244X
DOI
https://doi.org/10.1186/s12888-016-0826-5

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