Smoothed jackknife empirical likelihood inference for the difference of ROC curves

Hanfang Yang and Yichuan Zhao

Journal of Multivariate Analysis, 2013, vol. 115, issue C, 270-284

Abstract: For the comparison of two diagnostic markers at a flexible specificity, people apply the difference of two correlated receiver operating characteristic (ROC) curves to identify the diagnostic test with stronger discrimination ability. In this paper, we employ the jackknife empirical likelihood (JEL) method to construct confidence intervals for the difference of two correlated continuous-scale ROC curves. Using the jackknife pseudo-sample, we can avoid estimating several nuisance variables which have to be estimated in the existing methods. We prove that the smoothed jackknife empirical log likelihood ratio is asymptotically chi-squared distributed. Furthermore, the simulation studies in terms of the coverage probability and the average length of confidence intervals show good performance in small samples with a moderate computational cost. A real data set is used to illustrate our method.

Keywords: Confidence interval; Jackknife; Smoothed empirical likelihood (search for similar items in EconPapers)
Date: 2013
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (11)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0047259X12002412
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:jmvana:v:115:y:2013:i:c:p:270-284

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/supportfaq.cws_home/regional
https://shop.elsevie ... _01_ooc_1&version=01

DOI: 10.1016/j.jmva.2012.10.010

Access Statistics for this article

Journal of Multivariate Analysis is currently edited by de Leeuw, J.

More articles in Journal of Multivariate Analysis from Elsevier
Bibliographic data for series maintained by Catherine Liu ().