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The do file would look like this: *** outcome variable: "disease" (0=control, 1=case), there are N=1220 cases and N=4723 controls. *** exposure variable: "duration" (continuous) *** matching variable: "matchvar" (numerical) rmttest duration, by(disease 0 1) id(matchvar) Thanks in advance for your help, Marieke Schoonen * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/
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