jackknifeKME (version 1.2)

kmweight: Compute Kaplan-Meier weights

Description

Provide Kaplan-Meier weights for Stute's weighted least squares method.

Usage

kmweight(Y, delta)

Arguments

Y

survival time.

delta

status

Value

kmwts

Kaplan-Meier weights

Details

Kaplan-Meier weights are the mass attached to the uncensored observations. The weights are used to account for censoring into the calculation for many methods. For example, in the Stute's weighted least squares method (Stute and Wang, 1994)) that is applied for censored data.

References

Stute, W. and Wang, J. (1994). The jackknife estimate of a Kaplan-Meier integral. Biometrika 81, 602-606.

Examples

#Using simdata function and considering censoring level at 50%.
data<-simdata(n = 100,lambda = 2.04) 
kmw<-kmweight(data$Y, data$delta)
kmw