Relative Risk 01
Relative Risk 01 : (1) The ratio of the risk of disease or death among the exposed to the risk among the unexposed; this usage is synonymous with risk ratio; (2) alternatively, the ratio of the cumulative incidence rate in the exposed to the cumulative incidence rate in the unexposed, i.e., the cumulative incidence ratio, and (3) the term ''relative risk'' has also been used synonymously with ''odds ratio'' and, in some biostatistical articles, has been used for the ratio of forces of morbidity. The use of the term ''relative risk'' for several different quantities arises from the fact that for ''rare'' diseases (e.g., most cancers) all the quantities approximate one another. For common occurrences (e.g., neonatal mortality in infants under 1500g birth weight), the approximations do not hold
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