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本调查旨在研究和识别影响橡胶工人健康的职业癌危险性(职业性膀胱癌除外)。该研究采用了计算职业癌长潜伏期的方法,规定每个观察对象就业后至纳入统计分析之前必须存活的最小限期为10年潜伏间隔。所研究的工业人群开始为36,695人,由1946～1960年间进入13家主要工厂的男工组成,规定他们在橡胶工业连续工作至少1年。经扣除10年潜伏期后,最终落实研究人群为33,815人。按参加橡胶工业的时期(1946～50,1951～55,1956～60)分为三个队列。按生产性质分为轮胎和一般橡胶产品两大类,并按不
The purpose of this survey is to study and identify occupational cancer risks (excluding occupational bladder cancers) that affect the health of rubber workers. The study used a method of calculating occupational cancer latency, which stipulated a 10-year latency interval for each subject to survive before they were included in the statistical analysis. The industrial population studied started with 36,695 men, consisting of male workers who entered the 13 major factories from 1946 to 1960, requiring them to work continuously in the rubber industry for at least one year. After deducting a 10-year incubation period, the final study population was 33,815. By participating in the rubber industry period (1946 ~ 50,1951 ~ 55,1956 ~ 60) is divided into three cohorts. According to the nature of production divided into general categories of tires and rubber products, and press no