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(上接本刊2006年第17期1374页)6研究内容与资料收集6·1研究内容6·1·1筛检研究对象与收集基线资料基线资料也称本底资料,即研究对象与暴露因素在研究开始时的有关资料。在队列研究开始时,应对选择的暴露组与非暴露组的所有研究对象进行筛检,记录相关资料,并根据基线调查结果
(Continued on page 17 of 2006, No. 1774 pages) 6 research content and data collection 6.1 research 6.1.1 screening the research object and collect baseline data baseline data, also known as background data, that is, the object of study and exposure Factors at the beginning of the study related information. At the beginning of the cohort study, all subjects in the selected exposed and non-exposed groups should be screened, data recorded, and based on baseline findings