Objective To explore relevant factors to cognitive impairment among community patients with chronic schizophrenia in Wuxi municipality and to provide scientific evidences for making effective intervention measures. Methods With stratified randomized cluster sampling,all chronic schizophrenia patients aged 18- 60 years and registered in four communities( Jianghai,Guangyi,Lihu,and Xuelang) in Wuxi city were enrolled in this study. A general questionnaire,Positive and Negative Syndrome Scale( PANSS),Social Dis...