All::Clinical Science::Study Design::Hazard ratio

Intro

What is a Hazard ratio?

a statistical measure that compares the risk of an event occurring in two groups over time

How does Hazard ratio differ from relative risk ratios or odds ratios?

These also compare probabilities of two groups, but only in a point of time

When is Hazard Ratio used?

to estimate the treatment effect in clinical trials when you want to assess time-to-event