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st: How to add weighting variables in meta-analysis


From   "McFarland, Lynne V" <[email protected]>
To   "'[email protected]'" <[email protected]>
Subject   st: How to add weighting variables in meta-analysis
Date   Thu, 7 Jul 2005 08:31:13 -0700

An additional question to all you brilliant people about meta analysis.
How do you write into the command a variable that weights various
Studies for sample size or quality? 
Given a command line:    .metan tdeath tnodeath cdeath cnodeath, or 
If I want to add a variable sizei  ? And/or quali ?

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Michael McCulloch
Sent: Tuesday, July 05, 2005 10:54 PM
To: [email protected]
Subject: Re: st: A question about meta-analysis

Yes, the *metan* command will perform meta-analysis using simply the four
cells of the 2x2 table such as you describe. Type *help metan* to see the
many many options available to you. If you want to perform meta-analysis of
failure (instead of cure) simply subtract:
         #treated - # cured = # failed
Michael


At 03:54 PM 7/5/2005, you wrote:
>I am trying to do a meta-analysis for the first time with a series Of 
>older randomized trials. The only results that are provided in #cured 
>in treated/#treated vs #cured in controls/#controls and a Ttest or chi 
>squared.  Without having OR and 95% CI or even std errors,can I do a 
>Meta-analysis in Stata ?
>
>Can anybody with any experience help guide a poor Stata Virgin through
this?
>Or at least tell me if I'm barking up the wrong tree!
>
>Thank in Advance, hope everyone had a great July 4th and didn't blow up 
>Their BBQ!
>*
>*   For searches and help try:
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>*   http://www.stata.com/support/statalist/faq
>*   http://www.ats.ucla.edu/stat/stata/


Best wishes,
Michael


____________________________________

Michael McCulloch, LAc, MPH
Pine Street Clinic
124 Pine Street, San Anselmo, CA 94960-2674
tel     415.407.1357
fax     415.485.1065
email:  [email protected]
web:    www.pinest.org
         www.pinestreetfoundation.org





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