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Evidence-Based Practice (SCGH): Measure

Interpret Results

Use the glossaries, calculators, tools and tutorials on this page to help you calculate, interpret and explain your results.

How to Measure Results

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Absolute & Relative Risk Reduction

How to calculate relative risk reduction (video 3:12 min) Terry Shaneyfelt, UAB School of Medicine

Confidence Intervals

Confidence Interval Calculator
Confidence intervals (video 5 min) Terry Shaneyfelt, UAB School of Medicine

Forest Plots

How to interpret a forest plot (video 5:33 min) Terry Shaneyfelt, UAB School of Medicine
How to read a forest plot (CEBM) CEBM

Intention-to-Treat

Intention-to-treat analysis. What is it and why is it important? (video 4:44 min) Terry Shaneyfelt, UAB School of Medicine
Intention to treat concept: a review Perspect Clin Res. 2011 Jul-Sep; 2(3): 109–112

Number Needed to Treat (NNT)

Number needed to treat (NNT) CEBM
NNT calculator ClinCalc
How to calculate the Number Needed to Treat (video 3.48 min) Terry Shaneyfelt, UAB School of Medicine

Sensitivity and Likelihood Ratios

Likelihood ratios CEBM
How to calculate sensitivity (video 3:52 min) Terry Shaneyfelt, UAB School of Medicine
How to calculate specificity (video 3:28 min) Terry Shaneyfelt, UAB School of Medicine

EBP Calculators

EBM Calculator & Diagnostic Calculator CEBM

EBM Glossary

Cochrane Glossary of Evidence-Based Terms
Glossary - ACP Journal Club
NICE Glossary National Institute for Health Care Excellence