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本文研究了某些新的职业性致癌因素,并对研究资料的收集方法及分析技术和初步结果加以说明。调查用病例-对照法,对象限于男性18～54岁的癌患者,重点集中于相对年轻的肿瘤患者,因为青年人的诊断及职业资料可能要准确得多,且大多数已知工业致癌物对这个年龄组的相对危险性最高,因而,在这个年龄组中更易于检出。研究人群限于克利夫兰、亨伯赛德、柴郡以及默西赛德的Wirral区等区域内。这些地区集中了大部分过去30年中迅速发展的化学工业,许多新的化学物质被引入生产过程,其中一些现已知能使动物致癌,由于首次接触与
This paper studies some new occupational carcinogenic factors, and describes the collection methods and analytical techniques and preliminary results of the research data. In the case-control study, subjects were restricted to men with cancers 18 to 54 years of age and the focus was on relatively young cancer patients, as diagnosis and occupational data may be much more accurate for young adults and most known industrial carcinogens This age group has the highest relative risk and is therefore more easily detectable in this age group. The study population was limited to areas such as Cleveland, Humberside, Cheshire and the Wirral district of Merseyside. Most of these chemical industries are concentrated in the chemical industry over the past 30 years and many new chemicals are introduced into the production process, some of which are now known to cause cancer in animals and due to the first contact with