Trends in Psychotic Experiences in Bangkok: Informing the Planned Early Intervention Service at Somdet Chaopraya Institute of Psychiatry
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Abstract
Objective: To examine the prevalence of psychotic experiences (PE) in Bangkok compared to other regions, analyse their socioeconomic distribution, and identify associated factors to inform the development of early intervention services for psychosis at Somdet Chaopraya Institute of Psychiatry, with comparison to the 2013 Thai National Mental Health Survey findings.
Methods: Data from the 2023 Thai National Mental Health Survey were analysed to compare PE prevalence between Bangkok (n = 643) and other regions (n = 3,517). The primary analyses focused on Bangkok data, examining associations between PE and socioeconomic variables using multivariate logistic regression and then comparing the results to the prevalence in the 2013 survey.
Results: The prevalence of psychotic experiences in Bangkok was 2.9% (95% confidence interval (95% CI): 1.3 - 4.5), compared to 3.0% (95% CI: 2.2 - 3.8) in other regions, representing a significant decrease from the 5.9% prevalence reported in 2013. Important factors associated with PE included higher education (adjusted odds ratio (aOR) 1.89, 95% CI: 1.15 - 3.12), unemployment (aOR 1.76, 95% CI: 1.08 - 2.87), unmarried status (aOR 1.67, 95% CI: 1.12 - 2.49), and substance use (aOR 2.34, 95% CI: 1.42 - 3.86).
Conclusion: While the prevalence of PE has significantly decreased since 2013 and shows no urban-rural difference, several socioeconomic factors maintain significant associations with PE. The reduction in prevalence may reflect improvements in mental health services and public awareness. However, these findings suggest that early intervention services should continue to address educational level, employment status, marital status, and substance use in their development approach while building upon the apparent successes in reducing overall prevalence.
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