## Figuring odds ratio

Odds are used to describe the chance of an event occurring. The odds are the ratios that compare the number of ways the event can occur with the number of.
The odds ratio can also be used to determine whether a particular exposure is a risk factor for a particular outcome, and to compare the magnitude of various risk.
In statistics, the odds ratio (OR) is one of three main ways to quantify how strongly the presence The sample odds ratio / is easy to calculate, and for moderate and large samples performs well as an estimator of the population. How to calculate an odds ratio The risk ratioRR, is just the ratio of the two, which can be rewritten as. This shows that the odds ratio and consequently the log odds ratio is invariant to non-random sampling based on one of the variables being studied. Pleae let mee know if this alright with you. But figuring odds ratio you still find these hard, someone really should figure out how to make figuring odds ratio concepts more intuitive… This tutorial has been very helpful. When a non-casual association is observed between a given exposure and outcome is as a result of the influence of a third variable, it is quick hit pro free online confounding, with the third variable termed a confounding variable.