Rothman KJ. Computer analysis for case-control studies with individual matching. Int J Biomed Comput. 1974 Oct;5(4):241-7.

A time-sharing computer program written in BASIC language has been developed to analyse data from case-control epidemiologic studies with individual matching. The program will handle the data from matched studies with any number of controls matched to each case, including a varying number of controls for each case. The program computes point and interval estimates for the risk ratio parameter, performs statistical hypothesis testing, and permits a posteriori evaluation of the efficacy of the matching.

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