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本文研究对象为一组精神分裂症病人,其中有40例被确诊为前列腺癌。前列腺癌的患病率较低(患病率比例为0.56,P<0.01)。与不同年龄组患病率相当一致,而且尸解比例(47%)与一般人群的尸解比例(43%)无显著性差异,因此,患病率的全面性降低不是由于诊断的延误也不是由于肿瘤的发现率减低所造成的。给每例前列腺癌病人从同组中患病率密度相似且年龄相差不超过五岁的男性病人中选择两例配对,被选的对照病例均有患前列腺癌而又能被及时诊断的可能,这样,经统计分析得出的相对危险性的评估可视为患病率的比例。
In this study, a group of patients with schizophrenia, of which 40 were diagnosed with prostate cancer. Prevalence of prostate cancer is low (prevalence ratio of 0.56, P <0.01). The prevalence was quite consistent with age groups, and the proportion of autopsy (47%) did not differ significantly from that of the general population (43%), so the overall reduction in prevalence was not due to a delay in diagnosis nor was it Due to the decrease of the tumor discovery rate. For each case of prostate cancer patients from the same group in the prevalence of similarities in density and the age difference of not more than five years of male patients choose two paired, the selected control cases are suffering from prostate cancer and can be timely diagnosis, Thus, the statistical analysis of the relative risk assessment can be regarded as the proportion of prevalence.