Estimating standardized risk differences from odds ratios

S Greenland, P Holland (1991) Estimating standardized risk differences from odds ratios Biometrics (IF: 1.7) 47(1) 319-22

Abstract

Holland (1989, Biometrics 45, 1009-1016) gave simple formulas for an "adjusted" risk difference based on the Mantel-Haenszel odds ratio estimator and its variance. This "adjusted" risk difference is, in general, inconsistent, but Holland's variance formula is an immediate corollary of a more general formula by Greenland (1987, Journal of Chronic Diseases 40, 1087-1094). We show how, under a large-stratum limiting model, one can derive consistent estimators of standardized risk differences from any consistent odds ratio estimator. We also show how one can derive nonparametric standardized estimators under a sparse-data limiting model.

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http://www.ncbi.nlm.nih.gov/pubmed/2049505

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