Inverse‐probability‐weighted logrank test for stratified survival data with missing measurements

Rim Ben Elouefi and Foued Saâdaoui

Statistica Neerlandica, 2023, vol. 77, issue 1, 113-129

Abstract: The stratified logrank test can be used to compare survival distributions of several groups of patients, while adjusting for the effect of some discrete variable that may be predictive of the survival outcome. In practice, it can happen that this discrete variable is missing for some patients. An inverse‐probability‐weighted version of the stratified logrank statistic is introduced to tackle this issue. Its asymptotic distribution is derived under the null hypothesis of equality of the survival distributions. A simulation study is conducted to assess behavior of the proposed test statistic in finite samples. An analysis of a medical dataset illustrates the methodology.

Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:bla:stanee:v:77:y:2023:i:1:p:113-129

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