logCumHaz_ic_wei {curesurv} | R Documentation |
logCumHaz_ic_wei function
Description
calculates the confidence intervals of the log of cumulative excess hazard log(-log(Sn(t))) using variances of log(-log(Sn(t))). In this formula, the variance of log of the cumulative excess hazard is obtained using delta method at the scale of log-log of net survival, and with the expression Var(log(log(Sn(t)))) = (dlog(-log(Sn(t)))/dtheta)Var(theta)(dlog(-log(Sn(t)))/dtheta)^T; the Var(theta) is the variance-covariance matrix of theta (estimated parameters).
Usage
logCumHaz_ic_wei(
object,
z_pcured = z_pcured,
z_ucured = z_ucured,
x,
level,
cumLexctopred
)
Arguments
object |
ouput from a model implemented in curesurv |
z_pcured |
covariates matrix acting on cure proportion |
z_ucured |
covariates matrix acting on survival function of uncured |
x |
time at which the estimates are predicted |
level |
(1-alpha/2)-order quantile of a normal distribution |
cumLexctopred |
a pre prediction obtained with cumLexc_alphaweibull |
[Package curesurv version 0.1.2 Index]