Select the link below that is appropriate for your clinical question.

• Diagnosis: calculate predictive values
• Treatment: calculate absolute risk reduction (ARR) and number needed to treat (NNT)
• Causation (case control): calculate odds ratio (OR) and number needed to treat (NNT)
• Confidence: calculate confidence interval around a single proportion
• Bayesian statistics: interpreting p-values, rates, and means

About using numbers in medicine

comments