Ranganathan Priya, Aggarwal Rakesh
Department of Anaesthesiology, Tata Memorial Centre, Mumbai, Maharashtra, India.
Director, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India.
Perspect Clin Res. 2019 Apr-Jun;10(2):91-94. doi: 10.4103/picr.PICR_35_19.
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.
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。
