Objective: To explore the relationship between the relevant factors and prostate cancer among Hui and Han populations.
Methods: The study involved 267 prostate cancer patients as cases (214 cases from Han population and 53 cases from Hui population) and 534 prostatic hyperplasia patients as controls (428 cases from Han population and 106 cases from Hui population). All the patients were collected from the General Hospital of Ningxia Medical University during January of 2007 to September of 2013. The level of fasting blood glucose (FBG), total cholesterol (TC), triglyceride (TG), total prostate specific antigen (T-PSA), free prostate specific antigen (F-PSA) and free/total prostate specific antigen (F/T-PSA) were collected from the clinical medical records of the patients. Data were analyzed by the conditional logistic regression method, and attributable risk proportion(ARP) was calculated.
Results: In Hui population, the risk of prostate cancer for drinkers was 20.48 times higher than the non-drinkers (35.8% (19/53) to 5.7% (6/106), OR = 20.48, 95% CI: 4.95-84.66). The high level of F-PSA significantly increased the risk of prostate cancer for Hui group (83.0% (44/53) to 55.7% (59/106), OR = 4.27, 95%CI: 1.18-15.43). In contrast, the high TG level decreased the risk of prostate cancer for Hui group (18.9% (10/53) to 20.8% (22/106), OR = 0.24, 95% CI: 0.07-0.83). In Han population, the risk of prostate cancer for smokers was 1.89 times higher than the non-smokers (55.1% (118/214) to 39.7% (170/428), OR = 1.89, 95% CI: 1.28-2.78). Either high level of T-PSA or F-PSA increased the risk of prostate cancer for Han group (86.4% (185/214) to 53.7% (230/428),OR = 2.34, 95%CI:1.22-4.52;85.5% (183/214) to 56.1% (240/428), OR = 2.43, 95% CI:1.29-4.59). However, the high TG level or high ratio of F/T-PSA decreased the risk of prostate cancer (15.4% (33/214) to 18.7% (80/428), OR = 0.59, 95% CI:0.36-0.98; 53.3% (114/214) to 73.4% (314/428), OR = 0.53, 95% CI:0.36-0.78). The APRs of drinking and high level of F-PSA in Han populations were 66.6%, 62.4% in Hui populations , and the APRs of smoking and high level of T-PSA, high level of F-PSA were 33.8%, 71.3%, 67.3% in Han populations.
Conclusion: Both drinking and high level of F-PSA might be the risky factors of prostate cancer while the high TG level might be protective factor for Hui group. However, for Han population, smoking, high T-PSA level, and high F-PSA level might be risky factors for prostate cancer while the high TG level and high ratio of F/T-PSA might be protective factors. In summary, the clinical relevant factors of prostate cancer may play different roles between Hui and Han populations in Ningxia region.
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