Bayesian Re-Analysis of Biomedical Research

This calculator takes the results from biomedical research papers, a minimal important difference, and a prior probability of an intervention being truly effective and outputs a likelihood ratio as well as a Bayesian posterior probability. We call the latter PEGD (Probability of a [real] Effect Given the Data).

You will see icons across the page. Click on them for detailed instructions. If you need to compute an odds ratio, relative risk, or hazard ratio from raw proportions, click on the OR/RR/HR Calculator tab

CI width

Standard error

Null hypothesis

Standardized alternate hypothesis

Natural log of likelihood ratio

Likelihood ratio

PEGD (Probability of a [real] effect given the data) versus the null

Explanation of graph

Download graph as PDF

Please cite this page if you find it useful:

Jones PM. Bayesian Re-Analysis of Biomedical Research, version 1.11, https://shiny.medresearch.ca/bayesian_reanalysis/ Last accessed 2026-03-05

The following ratios are for the experimental arm relative to the control arm

Odds ratio

Relative risk

Hazard ratio

Likelihood ratio

Minimum false positive risk

Disclaimer

For educational purposes only.

None of the authors, contributors, administrators, or anyone else connected with this site , in any way whatsoever, can be responsible for your use of the information contained in or linked from these web pages.

My employer is not involved with this site and the site's content is my own.

Verify results before using.

Philip M Jones
Professor
Department of Anesthesiology & Perioperative Medicine
Mayo Clinic, Jacksonville, Florida, USA
jones.philip2@mayo.edu