RMTLd_sample: Sample size based on the difference in restricted mean time...

In hongji-wu/crRMTL: Restricted mean time lost (RMTL) analysis under competing risks

Description

calculating sample size based on RMTLd

Usage

RMTLd_sample(alpha, beta, r, delta, var.0, var.1)

Arguments

alpha	The default is 0.05.
beta	The default is 0.20.
r	The ratio of the sample size of group 0 to group 1.
delta	A value to specify RMTLd.
var.0	A value to specify the variance in group 0.
var.1	A value to specify the variance in group 1.

Value

an object of class RMTLd_sample

Examples

library(crRMTL)
data(simdata)
test <- RMTLd_test(simdata$time, simdata$status, simdata$group, alpha = 0.05,
digits = 3, tau = NULL)
n0 <- table(simdata$group)[1]
n1 <- table(simdata$group)[2]
r <- n0 / n1
delta <- test$Test.event1[3, 1]  ## RMTL of event 1
var.0 <- test$RMTL[1, 3] * n0    ## the sigma^2 of group 0
var.1 <- test$RMTL[2, 3] * n1    ## the sigma^2 of group 1
sample <- RMTLd_sample(alpha = 0.05, beta = 0.2, r = r, delta = delta, var.0 = var.0, var.1 = var.1)
sample

hongji-wu/crRMTL documentation built on Jan. 16, 2022, 12:37 a.m.