A Generalization of the Weibull Distribution with Application to the Analysis of Survival Data
作者:
GovindS. Mudholkar,
DeoKumar Srivastava,
GeorgiaD. Kollia,
期刊:
Journal of the American Statistical Association
(Taylor Available online 1996)
卷期:
Volume 91,
issue 436
页码: 1575-1583
ISSN:0162-1459
年代: 1996
DOI:10.1080/01621459.1996.10476725
出版商: Taylor & Francis Group
关键词: Bathtub and unimodal hazard rates;Proportional hazards;Total time on test transform
数据来源: Taylor
摘要:
The Weibull distribution, which is frequently used for modeling survival data, is embedded in a larger family obtained by introducing an additional shape parameter. This generalized family not only contains distributions with unimodal and bathtub hazard shapes, but also allows for a broader class of monotone hazard rates. Furthermore, the distributions in this family are analytically tractable and computationally manageable. The modeling and analysis of survival data using this family is discussed and illustrated in terms of a lifetime dataset and the results of a two-arm clinical trial.
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