采用大样本病例队列研究的方法评估了肿瘤大小与转移风险之间的相关性。
We evaluated the association between tumor size and the metastasis risk in a large patient cohort.
队列研究一般优先用于病例对照研究，由于其很少涉及的统计学问题，产生的结果一般比较可靠。
Cohort studies are generally preferred to case control studies, since they involve far fewer statistical problems and generally produce more reliable answers.
现有的研究包括29个队列研究，69个病例对照研究以及4个随机临床试验。
Of the available studies, 29 were cohort studies, 69 case-control studies, and 4 randomized clinical trials.
本文进行了一项队列内病例对照研究。
其中病例分析37篇，有19篇(5 1 4%)误作队列研究进行危险因素分析。
Of these, 37 were case studies, 19 (51.4%) of which were wrongly taken to be cohort studies analyzing risk factors.
同时一些观察性研究，如队列研究、病例对照研究和历史对照研究等纳入用于敏感性分析。
Observational studies such as cohort studies, cased-control studies, and historical controlled studies will be used for sensitivity analysis.
方法：此回顾性队列研究运用围产期资料包括从1995到2002年在Magee妇女医院分娩病例。
Methods This retrospective cohort study used data from a perinatal database that included all deliveries at Magee-Womens Hospital from 1995 to 2002.
膳食纤维或全麦食品摄入量与结直肠癌发病率的前瞻性队列研究和巢式病例对照研究。
Study selection Prospective cohort and nested case-control studies of dietary fibre or whole grain intake and incidence of colorectal cancer.
膳食纤维或全麦食品摄入量与结直肠癌发病率的前瞻性队列研究和巢式病例对照研究。
Study selection Prospective cohort and nested case-control studies of dietary fibre or whole grain intake and incidence of colorectal cancer.
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