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为了解前列腺癌发病的影响因素对１３７例经组织病理学检查确诊的前列腺癌患者及其医院对照进行了１∶１配比调查，运用ＳＡＳ软件对资料进行统计学分析。单因素分析结果显示夫妻分居、肝病史、丧偶或离异、吸烟、饮酒、职业性毒物接触史是前列腺癌发病的危险因素；体力锻炼是一项保护性因素；多因素分析结果显示前列腺癌危险因素（比值比，９５％可信区间）有丧偶或离异（６．２９，２．０４—１９．３８）、肝病史（４．９０，１．３０—１８．４０）、夫妻分居（２．９１，１．３２—６．４１）；保护性因素有体力锻炼（０．３８，０．２０—０．７２）。
In order to understand the factors influencing the incidence of prostate cancer, 137 cases of prostate cancer confirmed by histopathological examination and their hospital controls were investigated by 1: 1 ratio. SAS software was used to analyze the data. Univariate analysis showed that husband and wife separated, history of liver disease, widowed or divorced, smoking, alcohol consumption, occupational exposure history is a risk factor for prostate cancer; physical exercise is a protective factor; multivariate analysis showed that risk factors for prostate cancer (Odds ratio, 95% confidence interval) were widowed or divorced (6.29,2.04-19.38), history of liver disease (4.90,1.30-18.40), marital separation (2.91 , 1.32-6.41); protective factors have physical exercise (0.38,0.20-0.72).