NestedCohort (version 1.1-3)
Survival Analysis for Cohorts with Missing Covariate Information
Description
Estimate hazard ratios, survival curves and attributable
risks for cohorts with missing covariates, using Cox models or
Kaplan-Meier estimated for strata. This handles studies nested
within cohorts, such as case-cohort studies with stratified
sampling. See
http://www.r-project.org/doc/Rnews/Rnews_2008-1.pdf