Calculating a pooled odds ratio from an adjusted odds ratio?

I have individual adjusted odds ratios from different articles, and I want to combine them to calculate a pooled odds ratio, e.g., aOR 2.13(1.43-3.18) and aOR 1.47(0.54-3.98).

So, is there any formula or guidance on how to combine them? The adjusted odds ratios are from articles, and I don't have the entire data set related to these two articles.

• Sorry, don't have time to give you a more complete answer right now, but you could start by taking a look at the documentation of the metan command. – boscovich Jun 24 '12 at 22:38
• Of possible interest: Odds ratio and confidence interval in meta-analysis. – chl Jul 15 '12 at 19:30