compareC (version 1.3.2)

estC: Estimation of a single overall C index

Description

This is a function used to estimate a single overall C index

Usage

estC(timeX, statusX, scoreY)

Arguments

timeX

The vector of actual survival time X, one survival time for each observation

statusX

The matching vector of event indicator for time X, 1 if occured and 0 otherwise

scoreY

The vector of the measured biomarker Y, one for each of the same observations, based on which the C index is to be estimated

Value

The estimated C index

References

Harrell FE, Califf RM, Pryor DB, Lee KL, and Rosati RA. (1982) Evaluating the yield of medical tests. The Journal of the American Medical Association, 247(18), 2543--2546

Pencina MJ and D'Agostino RB. (2004) Overall C as a measure of discrimination in survival analysis: model specific population value and confidence interval estimation. Statistics in Medicine, 23(13), 2109--2123

Kang L, Chen W, Petrick NA, and Gallas BD. (2014) Comparing two correlated C indices with right-censored survival outcome: a one-shot nonparametric approach. Statistics in Medicine, 34(4), 685--703, doi: 10.1002/sim.6370

See Also

vardiffC,compareC

Examples

# NOT RUN {
demo(testC)
# }