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MEASURING THE SIZE OF A TREATMENT EFFECT: RELATIVE RISK REDUCTION, ABSOLUTE RISK REDUCTION, AND NUMBER NEEDED TO TREAT

Hollands, Hussein MD, MS (epid); Kertes, Peter J. MD, CM, FRCS(C)

Evidence-Based Ophthalmology:
doi: 10.1097/01.IEB.0000370570.60726.73
Measuring the Size of A Treatment Effect: Relative Risk Reduction, Absolute Risk Reduction, and Number Needed to Treat