title: Use of clozapine for the treatment of schizophrenia: findings of the 2006 research on the china psychotropic prescription studies.
abstract: OBJECTIVE
  Clozapine is one of the most commonly used antipsychotic drugs in China. To date, few studies have investigated the patterns the prescription of clozapine nationwide. The present study examined these patterns in China in 2006 and identified the demographic and clinical characteristics associated with the use of clozapine.
  
  
  METHODS
  Using a standardized protocol and data collection procedure, we surveyed 5,898 patients with schizophrenia in 10 provinces with differing levels of economic development.
  
  
  RESULTS
  Overall, clozapine had been prescribed for 31.9% (n=1,883) of the patients; however we found considerable variation among the 10 provinces. The frequency of clozapine use was highest in Sichuan (39.3%) and lowest in Beijing (17.3%). The mean daily dose of clozapine was 210.36±128.72 mg/day, and 25.1% of the patients were treated with clozapine in combination with other antipsychotics. Compared with the group not receiving clozapine, clozapine-user had been treated for longer durations and had experienced a greater number of relapses and hospitalizations. Furthermore, those in the clozapine-user had lower family incomes, were less able to seek psychiatric services, and more likely to be male and have a positive family history of schizophrenia. A multiple logistic regression analysis revealed that age, sex, professional help-seeking behaviors, duration of illness, economic status, educational level, and clinical manifestations were associated with the use of clozapine.
  
  
  CONCLUSIONS
  Clozapine use is common in China. However, use of the antipsychotic varies among provinces, and demographic and clinical factors play important roles in the prescription of clozapine.
authors: Peking University Institute of Mental Health, Beijing, China.
authors: Tian-Mei
authors: TM
authors: Si
authors: Yun-Shu
authors: YS
authors: Zhang
authors: Liang
authors: L
authors: Shu
authors: Ke-Qing
authors: KQ
authors: Li
authors: Xie-He
authors: XH
authors: Liu
authors: Qi-Yi
authors: QY
authors: Mei
authors: Gao-Hua
authors: GH
authors: Wang
authors: Pei-Shen
authors: PS
authors: Bai
authors: Li-Ping
authors: LP
authors: Ji
authors: Xian-Sheng
authors: XS
authors: Cheng
authors: Cui
authors: C
authors: Ma
authors: Jian-Guo
authors: JG
authors: Shi
authors: Hong-Yan
authors: HY
authors: Zhang
authors: Hong
authors: H
authors: Ma
authors: Xin
authors: X
authors: Yu
keywords: Clozapine; Prescription; Sampling studies; Schizophrenia