Riesgo relativo odds ratio pdf

Odds ratio, riesgo relativo y nmero necesario a tratar. Bias of using odds ratio estimates in multinomial logistic regressions to estimate relative risk or. Riesgo relativo y riesgo atribuible kevin marquez cruz. Erroneous interpretations of the or as rr or pr must be avoided, as several studies have shown that the or is not a good approx imation for these measures when the outcome is common 10%. Summary the odds ratio or and relative risk rr are measures of association for dichotomous nominal variables. Can hazard ratios and odds ratio be used interchangeably in. Odds ratio or y riesgo relativo rr en bioestadistica y.

Medicion del riesgo en epidemiologia rev mex pediatr. Odds ratio, riesgo relativo y numero necesario a tratar. Odds ratio or is an effect measure frequently used to communicate results of health research. From a methodological perspective, or can be calculated from prospective, retrospective and crosssectional designs.

Probabilidad, riesgo, odds y tasa erik cobo, jose a. The or has been widely used for biomedical research, the reasons for this are. Theoretical and practical issues odds ratio or is an effect measure frequently used to communicate results of health research. Odds ratio, riesgo relativo y numero necesario a tratar preparado por luis m. So, an odds ratio is measure of association which quantifies the relationship between an exposure and health outcome from a comparative study. Jaime cerda 1,2, claudio vera 1,3, gabriel rada 1,4. As an extreme example of the difference between risk ratio and odds ratio, if action a carries a risk of a negative outcome of 99. Bias of using odds ratio estimates in multinomial logistic. Can hazard ratios and odds ratio be used interchangeably. The relative risk rr or risk ratio is the ratio of the probability of an outcome in an exposed group to the probability of an outcome in an unexposed group. Together with risk difference and odds ratio, relative risk measures the association between the exposure and the outcome. Cuando utilizar riesgo relativo, y cuando odds ratio. Odds ratio, riesgo relativo y numero necesario a tratar seh. Mathematically, or is the quotient between two odds, being odds an alternative way to express possibility of occurrence of an outcome or presence of an exposition.