varest2 {geecure}R Documentation

Variance estimate with sandwich formula based on the EM algorithm

Description

Calculate the variance estimates using the sandwich formula based on the EM algorithm.

Usage

varest2(Time, Status, X, Z, id, gamma, beta, bsurv, w)

Arguments

Time

right censored data which is the follow up time.

Status

the censoring indicator, normally 0 = event of interest happens, and 0 = censoring.

X

a matrix of covariates corresponding to the latency part.

Z

a matrix of covariates corresponding to the incidence part.

id

a vector which identifies the clusters. The length of id should be the same as the number of observations.

gamma

the estimates for the incidence part.

beta

the estimates for the latency part.

bsurv

the estimate of the baseline survival function for the latency part.

w

conditional probability of a patient remains uncured.


[Package geecure version 1.0-6 Index]