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一、流行病不调查前列腺癌的发生率在同一国家也有地区差别。例如在日本,东京等地发病率高,爱知、三重、兵库等则发病率低。在同一国家,人种不同发病率也不同,例如在美国洛杉矶10万人的年龄校正死亡率中,黑人82.6、自人49.6、日本人22.8、朝鲜人11.7。另外同一人种在不同的国家发病率也不相同,例如日本人,住在日本国的10万人口的年龄校正发生率5～9,住在美国洛杉矶的为28.8、住在夏威夷的则为31.2,说明除遗传因素外与环境因素也有密切关系。
First, the epidemic does not investigate the incidence of prostate cancer in the same country there are regional differences. For example, in Japan, Tokyo and other places with high incidence, Aichi, triple, Hyogo, etc., the incidence is low. In the same country, the incidence of racial differences is also different. For example, the age-adjusted mortality rate of 100,000 people in Los Angeles, USA, is 82.6% for blacks, 49.6% for natives, 22.8% for Japanese and 11.7% for North Koreans. In addition, the same person has different morbidity rates in different countries. For example, the Japanese, living in Japan have an age-adjusted incidence of 5 to 9 in 10 million, 28.8 in Los Angeles, and 31.2 in Hawaii , Indicating that in addition to genetic factors and environmental factors are also closely related.