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Conservatism of the approximation sigma (O-E)2-E in the logrank test for survival data or tumor incidence data.

Abstract:

The logrank test is widely recommended for the statistical comparison of groups of observations of event times in which some observations may be censored. It is the rank test of greatest local power for detecting multiplicative differences in failure rates, and has many applications in clinical trials and carcinogenesis experiments. This report provides a 'cookbook' account of how to do it, and proves the conservatism of a certain easily calculated chi squared approximation to the conditional...

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Publication status:
Published

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Publisher copy:
10.2307/2529177

Authors


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Institution:
University of Oxford
Division:
MSD
Department:
Nuffield Department of Population Health
Sub department:
Clinical Trial Service Unit
Role:
Author
Journal:
Biometrics More from this journal
Volume:
29
Issue:
3
Pages:
579-584
Publication date:
1973-09-01
DOI:
EISSN:
1541-0420
ISSN:
0006-341X
Language:
English
Keywords:
Pubs id:
pubs:41538
UUID:
uuid:2366ade3-f873-4805-b8e1-d37fe00175ba
Local pid:
pubs:41538
Source identifiers:
41538
Deposit date:
2012-12-19

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