研究设计：第3部分 - 分析性观察性研究。
Study designs: Part 3 - Analytical observational studies.
作者信息
Ranganathan Priya, Aggarwal Rakesh
机构信息
Department of Anaesthesiology, Tata Memorial Centre, Mumbai, Maharashtra, India.
Director, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India.
出版信息
Perspect Clin Res. 2019 Apr-Jun;10(2):91-94. doi: 10.4103/picr.PICR_35_19.
Abstract
In analytical observational studies, researchers try to establish an association between exposure(s) and outcome(s). Depending on the direction of enquiry, these studies can be directed forwards (cohort studies) or backwards (case-control studies). In this article, we examine the key features of these two types of studies.
摘要
在分析性观察研究中，研究人员试图确定暴露因素与结果之间的关联。根据研究的询问方向，这些研究可以向前进行（队列研究）或向后进行（病例对照研究）。在本文中，我们将探讨这两种研究类型的关键特征。
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