| rmstreg {surv2sampleComp} | R Documentation |
Adjusted difference/ratio of restricted mean survival times
Description
Compares restricted mean survival time between two groups, adjusting for imbalance of baseline factors via a regression model.
Usage
rmstreg(y, delta, x, arm, tau, type="difference", conf.int=0.95)
Arguments
y |
The follow-up time. |
delta |
The censoring indicator, 1=event, and 0=censoring. |
x |
The covariate matrix. The first colomn of this matrix should be the group indicator, arm (below). |
arm |
The group indicator, 1/0. |
tau |
The value indicates the restricted time point on the follow-up time to calculate the restricted mean survival time. |
type |
The type of the between-group contrast measure: "difference"(default), "ratio" or "lossratio". |
conf.int |
The level for computation of the confidence intervals. The default is 0.95. |
Author(s)
Lu Tian
References
Tian L, Zhao L, Wei LJ. Predicting the restricted mean event time with the subject's baseline covariates in survival analysis. Biostatistics 2014, 15, 222-233.
Examples
D=pbc.sample()
x=cbind(D$group, D$covariates)
rmstreg(D$time, D$status, x, D$group, tau=8, type="difference")