Internal medicine

Regression analysis

Test (biology)

Meaning (existential)

Mathematics

Regression

Biology

Statistical hypothesis testing

Survival analysis

Statistics

Epistemology

Philosophy

Econometrics

Paleontology

Economics

Proportional hazards model

Medicine

JAMA

This JAMA Guide to Statistics and Methods explains the meaning underlying the proportional hazards (PH) assumption underlying Cox regression and survival analyses, and proposes that reports of survival differences might replace statistical tests of the PH assumption because they are more meaningful.

Why Test for Proportional Hazards?