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对经病理确诊的前列腺癌２７名及１：２配对对照５４名，以问卷方式调查其饮食生活习惯、婚姻、既往前列腺疾患等对前列腺癌发病的影响。运用单因素及多因素条件ｌｏｇｉｓｔｉｃ回归分析处理资料。结果示：摄入维生素Ａ多的人群患前列腺癌的危险性低（ＲＲ＝０．９４８，Ｐ＝０．０２９），并呈剂量反应梯度关系。既往前列腺疾息增加息前列腺癌的危险性（ＲＲ＝６．３８５，ｐ＝０．０４５）．离异、丧偶、再婚者患前列腺癌的危险高于在婚者（ＲＲ＝４．３１２，ｐ＝０．０１３）。
Twenty-seven prostate cancer patients were diagnosed pathologically and 54 patients were matched with 1: 2 counterparts. Their dietary habits, marital status and past prostate diseases were investigated by questionnaire. Using single factor and multi-factor conditional logistic regression analysis and processing data. The results showed that: the intake of vitamin A more people have a lower risk of prostate cancer (RR = 0.948, P = 0.029), and showed a dose-response gradient. Prostatic hyperplasia increased the risk of prostate cancer (RR = 6.385, p = 0.045). Divorced, widowed, the risk of re-marriage suffering from prostate cancer than married (RR = 4.312, p = 0.013).