Date of Award
12-2017
Degree Name
Doctor of Philosophy
Department
Statistics
First Advisor
Dr. Joshua D. Naranjo
Second Advisor
Dr. Magdalena Niewiadomska-Bugaj
Third Advisor
Dr. Mathew Anthony C. Rosales
Keywords
Survival analysis, stratified Logrank diagnostic, stratified Wilcoxon diagnostic, adjusting for covariates, adaptive test
Abstract
Martinez and Naranjo (2010) proposed a pretest for choosing between Logrank or Wilcoxon test in a two - sample case. However, in the presence of covariates, comparing two populations without adjusting for covariates would yield misleading results. In this study, we propose several pretests that will help the analyst decide to use stratified Logrank or stratified Wilcoxon tests in comparing two survival curves after covariates have been taken into account. Power performance of each adaptive test was done through simulations under PH and non-PH cases.
Access Setting
Dissertation-Open Access
Recommended Citation
Gatpatan, Jhoanne Marsh C., "Diagnostics for Choosing between Stratified Logrank and Stratified Wilcoxon" (2017). Dissertations. 3197.
https://scholarworks.wmich.edu/dissertations/3197