Inpatients in substance use treatment with co-occurring psychiatric disorders: a prospective cohort study of characteristics and relapse predictors

Abstract Background The characteristics of substance use disorder (SUD) inpatients with co-occurring psychiatric disorders (COD) have been scantly described in the extant literature. This study investigated psychological, demographic and substance use characteristics in these patients, along with pr...

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Main Authors: Helle Wessel Andersson, Mats P. Mosti, Trond Nordfjaern
Format: Article
Language:English
Published: BMC 2023-03-01
Series:BMC Psychiatry
Subjects:
Online Access:https://doi.org/10.1186/s12888-023-04632-z
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author Helle Wessel Andersson
Mats P. Mosti
Trond Nordfjaern
author_facet Helle Wessel Andersson
Mats P. Mosti
Trond Nordfjaern
author_sort Helle Wessel Andersson
collection DOAJ
description Abstract Background The characteristics of substance use disorder (SUD) inpatients with co-occurring psychiatric disorders (COD) have been scantly described in the extant literature. This study investigated psychological, demographic and substance use characteristics in these patients, along with predictors of relapse 3 months post-treatment. Methods Prospective data from a cohort of 611 inpatients were analyzed for demographics, motivation, mental distress, SUD diagnosis, psychiatric diagnoses (ICD-10) and relapse rate at 3 months post-treatment (retention rate = 70%). Results Compared to patients without COD (n = 322), those with COD (n = 289) were younger, had higher mental distress, lower education and higher likelihood of no permanent residence. The relapse rate was also higher in patients with COD (39.8%) relative to patients without COD (26.4%) (OR = 1.85, 95% CI: 1.23–2.78). The relapse rate was particularly high for patients with COD who were diagnosed with cannabis use disorder (53.3%). Multivariate analysis revealed that among patients with COD, relapse was more likely for individuals with a cannabis use disorder (OR = 2.31, 95% CI: 1.34-4.00), and less likely for older ages (OR = 0.97, 95% CI: 0.94-1.00), females (OR = 0.56, 95% CI: 0.33–0.98) and for those with higher intrinsic motivation (OR = 0.58, 95% CI: 0.42–0.81). Conclusion This study showed that among SUD inpatients, those with COD had relatively persistent high levels of mental distress and an increased risk of relapse. Enhanced measures aimed at COD patients’ mental health problems during the inpatient stay, along with close and personalized follow-up after discharge from residential SUD treatment may reduce the probability of relapse in this group.
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spelling doaj.art-82fe15305fa04a86bbcf14cb294d893d2023-03-22T12:00:23ZengBMCBMC Psychiatry1471-244X2023-03-0123111010.1186/s12888-023-04632-zInpatients in substance use treatment with co-occurring psychiatric disorders: a prospective cohort study of characteristics and relapse predictorsHelle Wessel Andersson0Mats P. Mosti1Trond Nordfjaern2Department of Research and Development, Clinic of Substance Use and Addiction Medicine, St. Olavs University HospitalDepartment of Research and Development, Clinic of Substance Use and Addiction Medicine, St. Olavs University HospitalDepartment of Research and Development, Clinic of Substance Use and Addiction Medicine, St. Olavs University HospitalAbstract Background The characteristics of substance use disorder (SUD) inpatients with co-occurring psychiatric disorders (COD) have been scantly described in the extant literature. This study investigated psychological, demographic and substance use characteristics in these patients, along with predictors of relapse 3 months post-treatment. Methods Prospective data from a cohort of 611 inpatients were analyzed for demographics, motivation, mental distress, SUD diagnosis, psychiatric diagnoses (ICD-10) and relapse rate at 3 months post-treatment (retention rate = 70%). Results Compared to patients without COD (n = 322), those with COD (n = 289) were younger, had higher mental distress, lower education and higher likelihood of no permanent residence. The relapse rate was also higher in patients with COD (39.8%) relative to patients without COD (26.4%) (OR = 1.85, 95% CI: 1.23–2.78). The relapse rate was particularly high for patients with COD who were diagnosed with cannabis use disorder (53.3%). Multivariate analysis revealed that among patients with COD, relapse was more likely for individuals with a cannabis use disorder (OR = 2.31, 95% CI: 1.34-4.00), and less likely for older ages (OR = 0.97, 95% CI: 0.94-1.00), females (OR = 0.56, 95% CI: 0.33–0.98) and for those with higher intrinsic motivation (OR = 0.58, 95% CI: 0.42–0.81). Conclusion This study showed that among SUD inpatients, those with COD had relatively persistent high levels of mental distress and an increased risk of relapse. Enhanced measures aimed at COD patients’ mental health problems during the inpatient stay, along with close and personalized follow-up after discharge from residential SUD treatment may reduce the probability of relapse in this group.https://doi.org/10.1186/s12888-023-04632-zSubstance related disordersPsychiatric comorbidityTreatment outcomeCannabis useMotivation
spellingShingle Helle Wessel Andersson
Mats P. Mosti
Trond Nordfjaern
Inpatients in substance use treatment with co-occurring psychiatric disorders: a prospective cohort study of characteristics and relapse predictors
BMC Psychiatry
Substance related disorders
Psychiatric comorbidity
Treatment outcome
Cannabis use
Motivation
title Inpatients in substance use treatment with co-occurring psychiatric disorders: a prospective cohort study of characteristics and relapse predictors
title_full Inpatients in substance use treatment with co-occurring psychiatric disorders: a prospective cohort study of characteristics and relapse predictors
title_fullStr Inpatients in substance use treatment with co-occurring psychiatric disorders: a prospective cohort study of characteristics and relapse predictors
title_full_unstemmed Inpatients in substance use treatment with co-occurring psychiatric disorders: a prospective cohort study of characteristics and relapse predictors
title_short Inpatients in substance use treatment with co-occurring psychiatric disorders: a prospective cohort study of characteristics and relapse predictors
title_sort inpatients in substance use treatment with co occurring psychiatric disorders a prospective cohort study of characteristics and relapse predictors
topic Substance related disorders
Psychiatric comorbidity
Treatment outcome
Cannabis use
Motivation
url https://doi.org/10.1186/s12888-023-04632-z
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