Contingency Management for Dually Diagnosed Inpatients with Psychosis

• Published in: International journal of environmental research and public health Vol. 21; no. 5; p. 578
• Main Authors: Docx, Lise, Destoop, Marianne, Dom, Geert
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 01.05.2024
• Subjects: Adult; Comorbidity; Diagnosis, Dual (Psychiatry); Drug use; Female; Humans; Inpatients - psychology; Intervention; Interviews; Male; Marijuana; Middle Aged; Patients; Personality; Psychosis; Psychotic Disorders - therapy; Reward; Substance abuse treatment; Substance use disorder; Substance-Related Disorders - therapy; Urine; Variables; Young Adult; Belgium; substance use disorder; contingency management; inpatient; psychosis
• ISSN: 1660-4601; 1661-7827; 1660-4601
• DOI: 10.3390/ijerph21050578

Contingency management (CM) is an evidence-based treatment method in substance abuse treatment. However, little is known about its efficacy in dually diagnosed patients with psychosis and in inpatient settings. Therefore, the aim of this study is to investigate the efficacy of CM for dually diagnosed patients with psychosis in an inpatient setting. Furthermore, we investigate the effect of the nature of the reward used (cash vs. prize) on the efficacy of CM. We made use of an 8-week fish-bowl CM intervention by means of a within-subject reversal design with three treatment phases (baseline—intervention—follow-up). Sixty-seven patients were included in this study, of whom thirty-four completed the protocol. The results show no effect of CM on abstinence nor an interaction with clinical or demographic variables. Cash money is as effective as prizes. Future research should further investigate the effect of psychosis and treatment setting on the efficacy of CM, with special attention for Patient Report Experience and Outcome Measures (PREM/PROM).