relative risk

In statistics and mathematical epidemiology, relative risk (RR) is the risk of an event (or of developing a disease) relative to exposure. Relative risk is a ratio of the probability of the event occurring in the exposed group versus the control (non-exposed) group. For example, if the probability of developing lung cancer among smokers was 20 nd among non-smokers 1%, then the relative risk of cancer associated with smoking would be 20. Smokers would be twenty times as likely as non-smokers to develop lung cancer.
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Le risque relatif (RR) est une mesure statistique souvent utilisée en épidémiologie, mesurant le risque de survenue d'un événement entre deux groupes.
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