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慢性病流行病学研究的分析性研究有四种基本类型:前瞻性队列研究,回顾性队列研究,病例对照研究,横断面研究。它们都是用来测量暴露与疾病的联系(association)的方法。探索环境有害因素与病的因果关系的流行病学调查研究,通常离不开这些方法。因此分析流行病学的这些方法都可以用于职业性慢性危害的研究,特别是职业性肿瘤的研究。
There are four basic types of analytical studies of chronic disease epidemiology: prospective cohort studies, retrospective cohort studies, case-control studies, and cross-sectional studies. They are all methods used to measure the association between exposure and disease. Epidemiological investigations into causality between environmentally harmful agents and illnesses are often not possible without these methods. Therefore, analysis of these epidemiological methods can be used for occupational studies of chronic hazards, especially occupational tumors.