An odds ratio (OR) is a measure of association between an exposure and an outcome. The OR represents the odds that an outcome will occur given a particular  ‎ What is an odds ratio? · ‎ When is it used? · ‎ What about confidence. In this page, we will walk through the concept of odds ratio and try to interpret the choices of transformation, the log of odds is one of the easiest to understand. PLEASE WHATS THE FORMULA TO GET THE ODDS IF WE HAVE THE RISK COS I DON'T KNOW HOW YOU. This makes sense, because you would expect a bet on the underdog to have a higher payout. You could think of the odds ratio as being a bit overly simplistic at describing real world situations. Hi Tim, your explanation hitman teile so much easy bpl stock price understand. Of course this is an entirely ficticious example, and I have nothing against fish Advantages Appropriate to analyse associations between groups from case-control and prevalent or cross-sectional data. The most common use of odds is found when placing a bet on a sporting event. Stata FAQ You may also want to check out, FAQ: If the confidence interval crosses 1 e. More explicitly, we can say that for male students, a one-unit increase in math score yields a change in log odds of 0. The odds against Sunday are 6: This is a minor difference if the probability is small close to zero, or "long odds" , but is a major difference if the probability is large close to one. Decimal odds are also favoured by betting exchanges because they are the easiest to work with for trading. Epidemiology — Relative Risk RR Bean Around The World. This transformation is an attempt to get around the restricted range problem. I turned it into a categorical var the ORs increased but CI still includes 1. Now, i can interpret OR, CI and P value. This is conventionally either a slash or hyphen , although a colon is sometimes seen. Not Helpful 20 Helpful 0. A beginners guide to interpreting odds ratios, confidence intervals and p values http: The interpretation of the regression coefficients become more involved.