These calculators were created for your own personal use and testing purposes. Medical decisions should NOT be based solely on the results of this program. Although this program has been tested thoroughly, we are not responsible for any damages or loss of information. Please use at your own risk.
Odds Ratio to NNT ConverterConverts Odds Ratio (OR) to Number Needed to Treat (NNT)
Diagnostic Test CalculatorCalculates the Sensitivity, Specificity, Positive Predictive Value (PPV), Negative Predictive Value (NPV), Likelihood Ratio + (LR+), and Likelihood Ratio - (LR-)
Prospective Study CalculatorCalculates the Relative Risk (RR), Absolute Relative Risk (ARR), and Number Needed to Treat (NNT)
Case Control Study CalculatorCalculates the Odds Ratio (OR)
Randomized Controlled Trial CalculatorCalculates the Relative Risk Reduction (RRR), Absolute Relative Risk (ARR), and Number Needed to Treat (NNT)