A generalized-Wilcoxon Test for comparing different Groups of Lung Cancer Treatment Results with right-censored Survival-time Patterns.

A Generalized Wilcoxon Test for Comparing Arbitrarily Singly-censored Samples.

where F1, F2 are cumulative distributions (discrete or continuous) of the observations and Tis their upper limit. The test is shown to be asymptotically normal and consistent against one-sided alternatives F1(t) < F2(t) (t ~ T) and against two-sided alternatives where either F1(t) < F2(t) or F1(t) > F2(t) (t ~ T). The asymptotic efficiency of the test relative to the efficient parametric test w...

Wilcoxon test for comparing arbitrarily singly - censored samples

rH..il:ribllltlton.-tr'ee two-sample test is proposed tha t is an extension of the Wilcoxon test with arbitrary censoring on the right. The test is conditional on the pattern ~ha.t~TV:&l>ll~l..lll. The null hypothesis is H0 : F1(t) = F2(t) (t ~ T) agai nst either H1 : F1(t) < F 2(t) (t ~ T) or H2 : F1(t) < F2(t) or F1(t) > F2 (t) (t ~ T), '~here .l\,F2 are cumulative distributions (discrete or ...

Weighted Wilcoxon-Type Rank Test for Interval Censored Data

Interval censored (IC) failure time data are often observed in medical follow-up studies and clinical trials where subjects can only be followed periodically, and the failure time can only be known to lie in an interval. In this paper, we propose a weightedWilcoxontype rank test for the problem of comparing two IC samples. Under a very general sampling technique developed by Fay (1999), the mea...

Comparing Two Independent Groups Via a Quantile Generalization of the Wilcoxon-Mann-Whitney Test

Comparing two correlated C indices with right-censored survival outcome: a one-shot nonparametric approach.

The area under the receiver operating characteristic curve is often used as a summary index of the diagnostic ability in evaluating biomarkers when the clinical outcome (truth) is binary. When the clinical outcome is right-censored survival time, the C index, motivated as an extension of area under the receiver operating characteristic curve, has been proposed by Harrell as a measure of concord...