Cox Proportional-Hazards Regression — free, runs in your browser
The workhorse of multivariable survival analysis: assess multiple covariates' effects on survival time, outputting each covariate's hazard ratio HR, 95%… Computed in your browser — no data uploaded.
Open free tool →Runs in your browser
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Export charts as SVG vector or HD/UHD PNG suitable for journal submission.
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Common questions
Do I need to check the proportional hazards assumption?
Yes. Check it before reporting HRs (e.g. Schoenfeld residuals or log–log survival plots); if it fails, a single HR does not summarise the effect over the whole follow-up.
What are the original references?
Cox DR. J R Stat Soc B 1972;34:187-202.
When should I use Cox Proportional-Hazards Regression?
The workhorse of multivariable survival analysis: assess multiple covariates' effects on survival time, outputting each covariate's hazard ratio HR, 95% CI, Wald p-value and the model likelihood-ratio test. Ties handled by Breslow approximation; p…
Is my data safe?
All calculations run entirely in your browser. No data is sent to any server. You can even use the tool offline after the page loads.
Run Cox Proportional-Hazards Regression now
The workhorse of multivariable survival analysis: assess multiple covariates' effects on survival time, outputting each covariate's hazard ratio HR, 95%… Computed in your browser — no data uploaded.
Open free tool →Free to use. No account required. No data uploaded.
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