Cigarette smoking in Chinese male inpatients with schizophrenia: a cross-sectional analysis.

Given the high rates of cigarette smoking in schizophrenia in many published studies from around the world, we studied the relationship between smoking status and clinical characteristics in male Chinese schizophrenic inpatients. Two hundred seventy-nine schizophrenic inpatients were assessed using clinical data forms to ascertain historical, demographic and treatment variables and collateral information was also collected from case records and interviews with patients and family members. Current smokers (N=112) were compared with non-smokers (N=167) on clinical variables by independent sample t-tests and chi(2) tests, with adjustment for confounding variables using ANCOVA and binary logistic regression analysis. Compared to non-smokers, current smokers were significantly more likely to be divorced, have lower educational attainment, a more episodic course, have a greater number of previous psychotic relapses and more likely to be treated with clozapine. There was no correlation, however, between smoking consumption and schizophrenic psychopathology. Accordingly, cigarette smoking may be associated with certain clinical features in schizophrenic patients, and should be carefully screened for when making treatment and rehabilitation plans.