Streptokinase reduces the rate of mortality associated with…
Streptokinase reduces the rate of mortality associated with myocardial infarction from 0.12 to 0.075. What is the number needed to treat (NNT) for streptokinase to prevent one death from stroke? ARC = the absolute risk of events in the control group ART = the absolute risk of events in the treatment group ARR (absolute risk reduction) = ARC – ART RRR (relative risk reduction) = (ARC – ART) / ARC NNT (number needed to treat) = 1 / ARR