Editor iHTS: Created page with "The ratio (quotient) of the risk difference for the occurrence of an event in the group exposed to a given factor and the probability that this event will occur in the group not exposed to this factor. '''Note:''' Thus, if the results of a trial show that the probability of death is 25% in the control group and 10% in the experimental group, the relative risk reduction is (0.25 - 0.10) ÷ 0.25 = 0.6. (Related concepts: absolute risk reduction, Number needed to tr..."

2023-11-17T11:18:52Z

Created page with "The ratio (quotient) of the risk difference for the occurrence of an event in the group exposed to a given factor and the probability that this event will occur in the group not exposed to this factor. '''Note:''' Thus, if the results of a trial show that the probability of death is 25% in the control group and 10% in the experimental group, the relative risk reduction is (0.25 - 0.10) ÷ 0.25 = 0.6. (Related concepts: absolute risk reduction, Number needed to tr..."

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The ratio (quotient) of the risk difference for the occurrence of an event in the group exposed to a given factor and the probability that this event will occur in the group not exposed to this factor.

'''Note:''' Thus, if the results of a trial show that the probability of death is 25% in the control group and 10% in the experimental group, the relative risk reduction is (0.25 - 0.10) ÷ 0.25 = 0.6.

(Related concepts: [[absolute risk reduction]], [[Number needed to treat (NNT)|number needed to treat]], and [[Odds ratio (OR)|odds ratio]].)

== Reference ==
http://htaglossary.net/relative-risk-reduction

Relative risk reduction - Revision history