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Sustained symptomatic remission in schizophrenia: Course and predictors from a two-year prospective study
Bernardo Carpiniello1, Federica Pinna1, Mirko Manchia2
1Section of Psychiatry, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy; Unit of Clinical Psychiatry, University Hospital Agency of Cagliari, Cagliari, Italy.
This study found that more stringent remission criteria in schizophrenia are more stable over time. Negative symptoms predict stable remission, while cognitive symptoms and illness duration predict remission duration.
Area of Science:
- Psychiatry
- Clinical Psychology
- Neuroscience
Background:
- Remission rates in psychosis vary significantly across studies and over time.
- Methodological differences contribute to variability in reported remission rates.
- Optimal assessment procedures and reliable predictors of remission are needed.
Purpose of the Study:
- To longitudinally compare remission status using different criteria in schizophrenia and schizoaffective disorder.
- To identify predictors of remission duration and stability.
Main Methods:
- 112 patients with schizophrenia or schizoaffective disorder were followed for 24 months.
- Remission was assessed using Remission in Schizophrenia Working Group (RSWG), PANSS positive and negative scales (PANSS-PN), and PANSS total score (PANSS-T).
- Kaplan-Meier survival analysis and regression models were used to analyze data.
Main Results:
- At baseline, 50% of patients met RSWG criteria, compared to 23.2% for other criteria.
- PANSS-T remission rates demonstrated the highest stability.
- Negative symptoms predicted stable remission for RSWG criteria; cognitive symptoms and illness duration predicted PANSS-T remission duration.
Conclusions:
- More stringent remission criteria exhibit greater stability over time.
- Basal clinical predictors play a significant role in remission.
- Using stringent criteria may optimize clinical evaluations and improve prediction of remission outcomes.
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