Metabolic syndrome (MetS) is highly prevalent among individuals with schizophrenia. However, substantial regional variation exists, and evidence from large samples of hospitalized patients in China remains limited. This study aimed to estimate the prevalence of MetS and to explore its associated factors among individuals with schizophrenia in China. We included 3042 participants with schizophrenia from 25 hospitals in Zhejiang Province from April to December 2022. MetS was defined according to the Chinese Diabetes Society (CDS) criteria, the National Cholesterol Education Program Adult Treatment Panel III (NCEP ATP III) criteria, and the International Diabetes Federation (IDF) criteria. The prevalence of MetS was estimated using the Clopper-Pearson method, and generalized additive models were used to fit smoothed age-specific prevalence curves. Multivariate logistic regression was used to explore potential factors associated with MetS. The overall prevalence of MetS was 34.9% (95% confidence interval CI: 33.2-36.7%), 42.6% (40.9-44.4%), and 38.9% (37.2-40.7%) based on the CDS, NCEP ATP III, and IDF criteria, respectively. The prevalence of MetS was significantly higher in female participants with schizophrenia compared to their male counterparts when applying the NCEP ATP III or IDF criteria. In addition, after reaching the age-specific peak, MetS prevalence declined in male participants but stabilized in females. High BMI (OR: 1.30 1.27-1.33) and comorbid endocrine diseases (OR: 1.79 1.48-2.17) were associated with increased odds of MetS. Metabolic syndrome is highly prevalent among individuals with schizophrenia, regardless of the diagnostic criteria used. Early identification and screening of metabolic abnormalities in individuals with schizophrenia should be considered.
Jin et al. (2025) studied this question.