contROC {nonbinROC} | R Documentation |
Assess the accuracies of diagnostic tests when the gold standard is continuous.
contROC(gldstd, test1, test2 = NULL)
gldstd |
vector giving the gold standard |
test1 |
vector giving a diagnostic test |
test2 |
optional vector giving another diagnostic test |
In the paired design, `contROC' returns the accuracies and associated standard errors of the
diagnostic tests, their covariance and the test for comparing two diagnostic tests' accuracies.
Otherwise, `contROC' returns the accuracy and associated standard error of the diagnostic test.
Paul Nguyen
Obuchowski, N. A. (2005) Estimating and comparing diagnostic tests' accuracy when the gold standard is not binary. Academic Radiology, 12, 1198-1204.
#A paired design example for tumor renal masses from Obuchowski (2005) data(tumor) attach(tumor) contROC(SURG, CT, Fi) #A paired design example for blood iron concentrations from Obuchowski (2006) data(blood) attach(blood) contROC(Serum, TIBC, TS)