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Clinical Trial
. 1998 Dec 30;17(24):2815-34.
doi: 10.1002/(sici)1097-0258(19981230)17:24<2815::aid-sim110>3.0.co;2-8.

Extracting summary statistics to perform meta-analyses of the published literature for survival endpoints

M K Parmar  1 , V Torri, L Stewart
Affiliations
Clinical Trial

Extracting summary statistics to perform meta-analyses of the published literature for survival endpoints

M K Parmar et al. Stat Med. .

Erratum in

  • Stat Med. 2004 Jun 15;23(11):1817

Abstract

Meta-analyses aim to provide a full and comprehensive summary of related studies which have addressed a similar question. When the studies involve time to event (survival-type) data the most appropriate statistics to use are the log hazard ratio and its variance. However, these are not always explicitly presented for each study. In this paper a number of methods of extracting estimates of these statistics in a variety of situations are presented. Use of these methods should improve the efficiency and reliability of meta-analyses of the published literature with survival-type endpoints.

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