Online Calculators and Worksheets

The MD Program curriculum at the University of Wisconsin School of Medicine and Public Health in Madison includes training in evidence-based medicine. These calculators and worksheetscan be used in conjunction with the diagnoses and therapy cases.

Evidence-Based Medicine Calculators

• Precision of Treatment Effect Calculator
• Post-Test Probability Calculator
• Diagnostic Test Calculator

Diagnostic Test Equations

• Sensitivity = A / (A+C)
• Specificity = D / (B+D)
• Positive predictive value = A / (A+B)
• Negative predictive value = D / (C+D)
• LR (+) = [A / (A+C)] / [B / (B+D)] = sensitivity / (1-specificity)
• LR (-) = [C / (A+C)] / [D / (B+D)] = (1-sensitivity) / specificity

Evidence-Based Medicine Worksheets

• Therapy: Answering Clinical Questions of Therapy Worksheet
• Diagnosis: Answering Clinical Question of Diagnosis Worksheet