AUCtest: AUC-Test

In stamats/MKmisc: Miscellaneous Functions from M. Kohl

AUC-Test

Description

Performs tests for one and two AUCs.

Usage

AUC.test(pred1, lab1, pred2, lab2, conf.level = 0.95, paired = FALSE)

Arguments

pred1	numeric vector.
lab1	grouping vector or factor for pred1.
pred2	numeric vector.
lab2	grouping vector or factor for pred2.
conf.level	confidence level of the interval.
paired	not yet implemented.

Details

If pred2 and lab2 are missing, the AUC for pred1 and lab1 is tested using the Wilcoxon signed rank test; see wilcox.test.

If pred1 and lab1 as well as pred2 and lab2 are specified, the Hanley and McNeil test (cf. Hanley and McNeil (1982)) is computed.

Value

A list with AUC, SE and confidence interval as well as the corresponding test result.

Author(s)

Matthias Kohl [e-mail]

References

J. A. Hanley and B. J. McNeil (1982). The meaning and use of the area under a receiver operating characteristic (ROC) curve. Radiology, 143, 29-36.

See Also

wilcox.test, AUC

Examples

set.seed(13)
x <- rnorm(100) ## assumed as log2-data
g <- sample(1:2, 100, replace = TRUE)
AUC.test(x, g)
y <- rnorm(100) ## assumed as log2-data
h <- sample(1:2, 100, replace = TRUE)
AUC.test(x, g, y, h)

stamats/MKmisc documentation built on Nov. 20, 2022, 6:06 a.m.