Concordance correlation in the measurements of time to event | Zendy

Liu Xinhua | Zendy; Du Yunling | Zendy; Teresi Jeanne | Zendy; Hasin Deborah S. | Zendy

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Concordance correlation in the measurements of time to event

Author(s) -

Liu Xinhua,

Du Yunling,

Teresi Jeanne,

Hasin Deborah S.

Publication year - 2005

Publication title -

statistics in medicine

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.996

H-Index - 183

eISSN - 1097-0258

pISSN - 0277-6715

DOI - 10.1002/sim.2004

Subject(s) - censoring (clinical trials) , statistics , concordance , correlation , mathematics , event (particle physics) , parametric statistics , consistency (knowledge bases) , econometrics , computer science , medicine , physics , geometry , quantum mechanics

The concordance correlation coefficient (CCC), a measure of concordance in ratings from multiple raters, was used to study inter‐rater agreement in measurements of time to event, generally not observed with perfect consistency among raters. As a function of the first two moments of rating measures, the CCC can be estimated with data subject to censoring, using a likelihood‐based estimation method applied under the assumptions of random censoring and parametric distribution models for the ratings of time to event. A simulation study was conducted for small sample performance under various censoring proportions. The use of the CCC with censored data is illustrated with an example taken from a data set containing data on time to an event with two raters per subject. Copyright © 2004 John Wiley & Sons, Ltd.

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