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Evaluation of Failure Time Surrogate Endpoints in Individual Patient Data Meta-Analyses


Provides functions for the evaluation of surrogate endpoints when both the surrogate and the true endpoint are failure time variables. The approaches implemented are: (1) the two-step approach (Burzykowski et al, 2001) with a copula model (Clayton, Plackett, Hougaard) at the first step and either a linear regression of log-hazard ratios at the second step (either adjusted or not for measurement error); (2) mixed proportional hazard models estimated via mixed Poisson GLM.

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surrosurv documentation built on Sept. 27, 2017, 9:04 a.m.