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# st: RE: Calculating a pooled odds ratio from an adjusted odds ratio?

 From Marcos Vinicius <[email protected]> To [email protected] Subject st: RE: Calculating a pooled odds ratio from an adjusted odds ratio? Date Tue, 1 Oct 2013 11:33:03 -0800

```Hello,..maybe weighted random-effect meta-analysis: adjusted odds ratios ?
how to do that using stata?
Vinicius

> -----Original Message-----
> From: [email protected]
> Sent: Tue, 1 Oct 2013 10:56:08 -0800
> To: [email protected]
> Subject: RE: Calculating a pooled odds ratio from an adjusted odds ratio?
>
> Hello,
> .. for meta-analysis of unadjusted OR I know the syntax but and for
> How to conduct using stata?
> Thanks Vinicius.
>
> use bcgtrial.dta, clear
> list trialnam startyr tcases tnoncases ccases cnoncases , clean noob
> abbr(10)
>
>
>
>
> metan tcases tnoncases ccases cnoncases, rr fixedi lcols(trialnam
> startyr) xlabel(0.1,10) favours(BCG reduces risk of TB # BCG increases
> risk of TB)
>
>
>
>
> gen logRR = ln( (tcases /ttotal )/(ccases /ctotal ))
> gen selogRR = sqrt(1/tcases +1/ccases -1/ttotal -1/ctotal )
> metan logRR selogRR , fixed eform nograph
>
>
>
> metan logRR selogRR , fixed eform
> metan logor selogor , eform fixed label(namevare=trialnam,
> yearvar=startyr ) xlabel(.1,.5,1,2,10) force effect("Odds ratio")
>
>> -----Original Message-----
>> From: [email protected]
>> Sent: Mon, 30 Sep 2013 10:11:29 -0800
>> To: [email protected]
>> Subject: Calculating a pooled odds ratio from an adjusted odds ratio?
>>
>> Hello,
>> I have individual adjusted odds ratios from different observational
>> studies, and I want to combine them to calculate a pooled odds ratio,
>> So, is there any formula or guidance on how to combine them  ?  (stata
>> code?)
>> The book(and others classical references) Meta-Analysis in Stata: An
>> Updated Collection from the Stata Journal don’t mention it
>> Any help would be greatly appreciated.
>> Regards,
>> Vinicius,
>>
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