rmstaug: Adjusted difference/ratio of restricted mean survival times

In surv2sampleComp: Inference for Model-Free Between-Group Parameters for Censored Survival Data

Description

Compares restricted mean survival time between two groups, adjusting for imbalance of baseline factors.

Usage

rmstaug(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 group indicator, arm (below) should not be included in this matrix.
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()
rmstaug(D$time, D$status, D$covariates, D$group, tau=8, type="difference")

Example output

$result.ini
               coef  se(coef)          z         p lower 0.95 upper 0.95
intercept 6.1111255 0.2215825 27.5794600 0.0000000  5.6768318  6.5454192
arm       0.1894029 0.3157595  0.5998326 0.5486178 -0.4294744  0.8082802

$result.aug
               coef  se(coef)          z         p lower 0.95 upper 0.95
intercept 6.1981204 0.1933750 32.0523381 0.0000000  5.8191124  6.5771284
arm       0.1857071 0.2392827  0.7760991 0.4376905 -0.2832783  0.6546925

surv2sampleComp documentation built on May 2, 2019, 12:39 a.m.