# Pooled odds ratio

# What is **Pooled odds ratio**?

Pooled odds ratio meaning When the data on odds ratios from multiple studies are combined, the result is a pooled odds ratio (POR). An odds ratio (OR) is the comparison of the chance of an event occurring in one group to the chance of it occurring in another group. The odds ratio is a measure of effect size and is commonly used to compare results in clinical trials.

reference: national Cancer Institute – Glossary for Registrars

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