I have a bunch of articles presenting “OR” with a- 95% CI (confidence intervals).

I want to estimate from the articles the P value for the observed OR. For that, I need an assumption regarding the OR distribution. What distribution can I safely assume/use?

**Answer**

The log odds ratio has a Normal asymptotic distribution :

log(^OR)∼N(log(OR),σ2log(OR))

with σ estimated from the contingency table. See, for example, page 6 of the notes:

**Attribution***Source : Link , Question Author : Tal Galili , Answer Author : ars*