Reisenweber, Melanie (2024) The Impact of Transdiagnostic Symptoms on Treatment Outcomes for Substance Use. Honours thesis, University of Southern Queensland. (Unpublished)
Abstract
Despite extensive research being conducted on treatments for substance use disorder, current treatments are often inadequate with 40 – 60% of patients relapsing within one year of completing treatment. Many researchers have found mental health disorders frequently co-occur with substance use disorder; often increasing the severity and making it resistant to treatment. There is an emerging trend of considering transdiagnostic factors across research and clinical practice. However, the term transdiagnostic factors is an umbrella term for any factors that contribute to, cause, or are present across multiple disorders. This study refined transdiagnostic factors to symptoms that occur across multiple mental health disorders to determine if transdiagnostic symptoms may impact treatment outcomes for substance use disorder. Archival data from Drug Arm was used to determine firstly, whether transdiagnostic symptoms impact treatment outcomes for substance use disorder. Secondly, whether there are certain transdiagnostic symptoms that affect treatment for substance use disorder, and finally, whether transdiagnostic symptoms affect relapse rates. Participants’ (n = 824) mental health disorders were coded into groups according to transdiagnostic symptoms and compared against the difference in severity of dependence; self-esteem; psychological distress; and quality of life from pre to post treatment. Findings suggest that transdiagnostic symptoms may play a role in increased rates of relapse; increased psychological distress for anxiety and depressive related transdiagnostic symptoms; lower self-esteem associated with schizophrenia and other psychotic disorders; and higher quality of life associated with neurodevelopmental and obsessive compulsive disorders.
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| Item Type: | Thesis (Non-Research) (Honours) |
|---|---|
| Item Status: | Live Archive |
| Additional Information: | Current UniSQ staff and students can request access to this thesis. Please email research.repository@unisq.edu.au with a subject line of SEAR thesis request and provide: Name of the thesis requested and Your name and UniSQ email address |
| Faculty/School / Institute/Centre: | Current – Faculty of Health, Engineering and Sciences - School of Psychology and Wellbeing (1 Jan 2022 -) |
| Supervisors: | Wang, Grace |
| Qualification: | Bachelor of Psychology (Honours) |
| Date Deposited: | 28 Jan 2026 05:44 |
| Last Modified: | 28 Jan 2026 05:44 |
| Uncontrolled Keywords: | Mental health, Relapse, substance use, transdiagnostic factors, transdiagnostic symptoms, treatment outcomes. |
| Fields of Research (2008): | 17 Psychology and Cognitive Sciences > 1701 Psychology > 170106 Health, Clinical and Counselling Psychology |
| Fields of Research (2020): | 52 PSYCHOLOGY > 5203 Clinical and health psychology > 520304 Health psychology |
| URI: | https://sear.unisq.edu.au/id/eprint/53110 |
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