estC {compareC}R Documentation

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

Author(s)

Le Kang, Weijie Chen

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

demo(testC)

[Package compareC version 1.3.1 Index]