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• W4380185260 abstract "Abstract The drivers of cognitive change following first-episode psychosis remain poorly understood. Evidence regarding the role of antipsychotic medication is primarily based on naturalistic studies or clinical trials without a placebo arm, making it difficult to disentangle illness from medication effects. A secondary analysis of a randomised, triple-blind, placebo-controlled trial, where antipsychotic-naive patients with first-episode psychotic disorder were allocated to receive risperidone/paliperidone or matched placebo plus intensive psychosocial therapy for 6 months was conducted. A healthy control group was also recruited. A cognitive battery was administered at baseline and 6 months. Intention-to-treat analysis involved 76 patients (antipsychotic medication group: 37; 18.6 Mage [2.9] years; 21 women; placebo group: 39; 18.3 Mage [2.7]; 22 women); and 42 healthy controls (19.2 Mage [3.0] years; 28 women). Cognitive performance predominantly remained stable (working memory, verbal fluency) or improved (attention, processing speed, cognitive control), with no group-by-time interaction evident. However, a significant group-by-time interaction was observed for immediate recall ( p = 0.023), verbal learning ( p = 0.024) and delayed recall ( p = 0.005). The medication group declined whereas the placebo group improved on each measure (immediate recall: p = 0.024; η p 2 = 0.062; verbal learning: p = 0.015; η p 2 = 0.072 both medium effects; delayed recall: p = 0.001; η p 2 = 0.123 large effect). The rate of change for the placebo and healthy control groups was similar. Per protocol analysis (placebo n = 16, medication n = 11) produced similar findings. Risperidone/paliperidone may worsen verbal learning and memory in the early months of psychosis treatment. Replication of this finding and examination of various antipsychotic agents are needed in confirmatory trials. Antipsychotic effects should be considered in longitudinal studies of cognition in psychosis. Trial registration: Australian New Zealand Clinical Trials Registry ( http://www.anzctr.org.au/ ; ACTRN12607000608460)." @default.
• W4380185260 created "2023-06-11" @default.
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• W4380185260 date "2023-06-10" @default.
• W4380185260 modified "2023-10-14" @default.
• W4380185260 title "Effects of risperidone/paliperidone versus placebo on cognitive functioning over the first 6 months of treatment for psychotic disorder: secondary analysis of a triple-blind randomised clinical trial" @default.
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• W4380185260 doi "https://doi.org/10.1038/s41398-023-02501-7" @default.
• W4380185260 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37301832" @default.
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