[R] coxme frailty model standard errors?

Roby hiheister at gmail.com
Tue Jul 26 15:49:40 CEST 2011

Hi, but why we do the difference : ltemp <- 2 * diff(tfit$loglik[1:2]) ??

Where I can find information about Integrate Likelihooh and null like

Thank you very much,

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