Available now on the App Store
The goal of EBM Calculator is to help with your appraisal of the medical literature!
Effect Calculator
- Used for studies that examine the effect of a therapy or exposure
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Calculate key effect estimates for dichotomous outcomes:
- Absolute Risk Reduction (ARR)
- Number Needed to Treat (NNT)
- Risk Ratio (RR)
- Relative Risk Reduction (RRR)
- Odds Ratio (OR)
- Includes 95% Confidence Intervals for every metric
Diagnostic Test Calculator
- Used for studies that evaluate the accuracy of a diagnostic test
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Calculate core statistics:
- Sensitivity & Specificity
- Likelihood Ratios (LR+, LR-)
- Positive & Negative Predictive Values (PPV, NPV)
- Includes 95% Confidence Intervals for all measures
Post-Test Probability Calculator
- Used to estimate the likelihood of disease after a test result
- Input Sensitivity & Specificity or Likelihood Ratios
- Visualize probability changes with an interactive Fagan Nomogram
Save, Search & Share
- Save up to 100 results for future reference
- Search results to quickly find what matters
- Share as a PNG—ideal for Messages, email, and clean formatting
- Export results as an .ebmc file to archive or send to other EBM Calculator users
- Tap an .ebmc file to import results back into EBM Calculator
Lessons
- Explore lessons in Evidence-Based Medicine (EBM)
- Reinforce core concepts in biostatistics and study design