Does Log-rank test give satisfactory results?

Qamruz ZAMAN
Karl Peter PFEIFFER

Keywords

Log-rank test, Proportional hazards assumption, Kaplan-Meier survival curve

Abstract

Comparison of effects of two treatments by log-rank test is a very common phenomenon in medical research. Researchers prefer to use log-rank test with out carrying about the assumptions of test, which sometimes not only destroy the effects of study but also misguides the readers. The idea of this article is to review some aspects of log-rank test and to provide some rules of thumb.