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Testing Equality of Survival Functions of Quality‐Adjusted Lifetime
Author(s) -
Zhao Hongwei,
Tsiatis Anastasios A.
Publication year - 2001
Publication title -
biometrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.298
H-Index - 130
eISSN - 1541-0420
pISSN - 0006-341X
DOI - 10.1111/j.0006-341x.2001.00861.x
Subject(s) - statistics , statistic , test statistic , log rank test , null hypothesis , quality (philosophy) , mathematics , rank (graph theory) , survival analysis , statistical hypothesis testing , test (biology) , econometrics , biology , combinatorics , philosophy , epistemology , paleontology
Summary. We present a method for comparing the survival functions of quality‐adjusted lifetime from two treatments. This test statistic becomes the ordinary log‐rank test when quality‐adjusted lifetime is the same as the survival time. Simulation experiments are conducted to examine the behavior of our proposed test statistic under both null and alternative hypotheses. In addition, we apply our method to a breast cancer trial for comparing the distribution of quality‐adjusted lifetime between two treatment regimes.