Zeger the johns hopkins university, department of biostatistics, baltimore, maryland 21205, u.s.a.
Pair matched case control study. Introduction in epidemiology, matching is often used to control for confounding which may result from the use of observational data. In an observational study, to investigate the treatment effect, one common strategy is to match the control subjects to the treated subjects. First, the user is prompted to enter.
For this reason, it is generally incorrect to perform the analysis using 2×2 tables since it does not take. We shall be concerned with matched pairs in which one subject is selected from each of two groups to form a pair. The matching is done on the basis of one or more risk factors.
First use of the design can be traced to medicine (in 1926) and criminology and the social sciences more generally (in 1935).