CANJEM

CANJEM (CANadian Job-Exposure Matrix) is a large source of retrospective information on job-based exposure for a given occupation and time period. Covering most occupations and many agents, it provides information on the probability, frequency and intensity of exposure from a list of 258 occupational risk factors. CANJEM was built from past individual expert evaluations of occupational exposures in a series of four case control studies of various cancers conducted since the mid-1980s up to 2010 in the greater Montreal area. During these studies over 30 000 jobs from 1930 to 2005 held by close to 10 000 subjects were evaluated by experts who assigned exposures based on descriptions of tasks, processes, work environment, and exposure control measures."

CANJEM（加拿大职业暴露矩阵）是一项庞大的回顾性信息资源，它针对特定职业和时间段的职业暴露情况进行了详尽记录。该数据集涵盖了绝大多数职业和众多代理，提供了关于258项职业风险因素暴露概率、频率及强度的详细信息。CANJEM的构建基于自1980年代中期至2010年在蒙特利尔地区进行的系列病例对照研究中对职业暴露的专家评估，这些研究旨在探讨多种癌症。在这些研究中，专家们对近10,000名受试者在1930年至2005年间所持有的超过30,000个职业进行了评估，并根据任务的描述、工艺流程、工作环境和暴露控制措施等因素分配暴露等级。