Point and Interval Estimations of Marginal Risk Difference by Logistic Model

Xiaoqin Wang, Yin Jin and Li Yin

Communications in Statistics - Theory and Methods, 2015, vol. 44, issue 17, 3703-3722

Abstract: We use logistic model to get point and interval estimates of the marginal risk difference in observational studies and randomized trials with dichotomous outcome. We prove that the maximum likelihood estimate of the marginal risk difference is unbiased for finite sample and highly robust to the effects of dispersing covariates. We use approximate normal distribution of the maximum likelihood estimates of the logistic model parameters to get approximate distribution of the maximum likelihood estimate of the marginal risk difference and then the interval estimate of the marginal risk difference. We illustrate application of the method by a real medical example.

Date: 2015
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DOI: 10.1080/03610926.2013.851229

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