The aim of this study is to examine the prevalence of the Metabolic syndrome(MetS) in Korean patients with schizophrenia.

Primary objective:

• To investigate the prevalence of the MetS in Korean patients with schizophrenia

Secondary objectives:

• To compare the prevalence of the MetS among 3 groups according to antipsychotics: typical antipsychotic monotherapy group, atypical antipsychotic monotherapy group, 2 or more antipsychotics group (polypharmacy)

Inclusion Criteria:

• Diagnosis of schizophrenia according to DSM-IV-TR
• Age between 18-65 years

The study will include all patients that met the following criteria:

1. Diagnosis of schizophrenia according to DSM-IV-TR
2. Age between 18-65 years

To obtain the representative results for the prevalence of the MetS in schizophrenic patients stratified age and gender, we plan to evaluate about one thousand patients in twenty nationwide centers.

1. 20 centers were selected to provide the representative results of prevalence of the MetS
2. 50 patients in each center were consecutively enrolled