odds ratio to chi square conversion

Posted by Maguin, Eugene on Jun 29, 2012; 1:45pm
URL: http://spssx-discussion.165.s1.nabble.com/odds-ratio-to-chi-square-conversion-tp5713894.html

Is there a way to convert an odds ratio to a chi square value? Specifically, given a 2x2 crosstabulation of x against y, the association between x and y can be expressed as an odds ratio (OR: bc/ad), as exp(B) from a logistic regression or a chi square. Knowing only either OR or B, can a chi-square be computed? One of the places this problem comes up is in meta-analyses where authors don't report sufficient data in primary reports.

Thanks, Gene Maguin

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