Odds ratio
= Odds ratio
{title2=$\operatorname{OR}$}
{wiki}
The odds ratio is the ratio of two event odds. For rare events it is close to the corresponding <risk ratio>, because $p/(1-p)\simeq p$ when $p$ is small.
= Odds ratio
{title2=$\operatorname{OR}$}
{wiki}
The odds ratio is the ratio of two event odds. For rare events it is close to the corresponding <risk ratio>, because $p/(1-p)\simeq p$ when $p$ is small.