Stallard, Nigel. (2009) Simple tests for the external validation of mortality prediction scores. Statistics in Medicine, Vol.28 (No.3). pp. 377-388. ISSN 0277-6715

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Abstract

This paper is concerned with methods for the external validation of the prognostic scores that predict the probability of some event such as death. The problem is similar to that of testing the goodness-of-fit of a logistic regression model, except that the prognostic scores are not estimated and validated using the same data. A number of methods for assessing logistic model goodness-of-fit have been proposed, and some of these can also be used in the setting considered. A simple test based on the likelihood ratio statistic is proposed. which does not require arbitrary choice of groups or smoothing parameters. In a simulation study. the proposed method is found to be as powerful as commonly used methods under the scenarios considered. Copyright (C) 2008 John Wiley & Sons. Ltd.

Item Type:	Journal Article
Subjects:	Q Science > QA Mathematics R Medicine > R Medicine (General)
Divisions:	Faculty of Medicine > Warwick Medical School > Health Sciences Faculty of Medicine > Warwick Medical School
Library of Congress Subject Headings (LCSH):	Mortality -- Forecasting -- Methodology, Regression analysis
Journal or Publication Title:	Statistics in Medicine
Publisher:	John Wiley & Sons Ltd.
ISSN:	0277-6715
Date:	1 February 2009
Volume:	Vol.28
Number:	No.3
Number of Pages:	12
Page Range:	pp. 377-388
Identification Number:	10.1002/sim.3393
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
URI:	http://wrap.warwick.ac.uk/id/eprint/28621

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