Health Research and Policy


retrovar computes the asymptotically correct variances for the estimates of the parameters from a logistic regression done with data which have been ascertained retrospectively and have certain covariance structures. See, "Logistic Regression of Family Data From Retrospective Study Designs"; A. S. Whittemore and J. Halpern; Genetic Epidemiology 25:177-189 (2003).

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