ArticleThe Australian and New Zealand journal of psychiatry2024
Prevalence of treatment-resistant schizophrenia among people with early psychosis and its clinical and demographic correlates.
Article in The Australian and New Zealand journal of psychiatry, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Glutamate change in the anterior cingulate cortex after starting clozapine: evaluating 1H-MRS pilot data.BMC psychiatry · 2026Article
- Adult psychiatrists' views on clozapine prescribing for schizophrenia in Germany-an online survey.Therapeutic advances in psychopharmacology · 2026Article
- Evaluating the Role of Clozapine in Treatment-Resistant Schizophrenia: A Narrative Synthesis of Clinical, Economic, and Quality-of-Life Outcomes.Neuropsychiatric disease and treatment · 2025Review
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Authors and funding
5 authors.
Funding
Abstract
objectiveThe prevalence of treatment-resistant schizophrenia (TRS) among people with first-episode schizophrenia (FES) has been sub-optimally researched in Australia and internationally. We evaluated the prevalence of TRS among a cohort of FES patients and compared their sociodemographic and clinical characteristics to those with FES who were treatment responsive.
methodsOver 2 years, we collated demographic, clinical and treatment-related data of all patients with ICD-10 (International Classification of Diseases, Tenth revision) diagnosis of schizophrenia who were active in October 2020 at four early psychosis intervention services (EPIS) in Western Australia. We used a modified version of Suzuki et al. criteria to diagnose TRS. The data were analysed utilising descriptive statistics, the Mann-Whitney U test, Student's
resultsThe prevalence of TRS among the 167 patients diagnosed with FES was 41.3%, and the rates did not differ significantly between the services (
conclusionsOur study revealed that treatment resistance to antipsychotics is prevalent among people with FES managed at EPIS. Notably, it establishes an association between TRS and heightened clinical severity and psychosocial and treatment burden. These findings highlight the imperative for early detection of treatment resistance and timely and specialised interventions for this condition in mental health services.
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