Sample size for testing and estimating the difference between two paired and unpaired proportions: a 'two-step'

Bruno Mario Cesana1

  • 1Ospedale Maggiore di Milano, I.R.C.C.S, Direzione Scientifica, Laboratorio Epidemiologico, Ospedale Maggiore di Milano, I.R.C.C.S, Via F. Sforza 28, 20122 Milan, Italy. cesana@telemacus.it

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