Thanks!
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Steichen, Thomas
J.
Sent: Thursday, July 07, 2005 11:50 AM
To: [email protected]
Subject: st: RE: How to add weighting variables in meta-analysis
Lynne,
A command line such as "metan tdeath tnodeath cdeath cnodeath, or" IS
weighted by sample size(s)!
Such a command will take into account the number of subjects (as you have
specified the exact number in the treated and control groups for each
study).
There is no weighting feature in metan for study quality (but perhaps this
will be considered when metan is rewritten for Stata 9).
Tom
Thomas J. Steichen
[email protected]
----------------------------------------------------------------------------
Facts do not cease to exist because they are ignored. - Aldous Huxley
----------------------------------------------------------------------------
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of McFarland,
> Lynne V
> Sent: Thursday, July 07, 2005 11:31 AM
> To: '[email protected]'
> Subject: st: How to add weighting variables in meta-analysis
>
>
> 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:
> >* http://www.stata.com/support/faqs/res/findit.html
> >* 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
>
>
>
>
>
> *
> * For searches and help try:
> * http://www.stata.com/support/faqs/res/findit.html
> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/
> *
> * For searches and help try:
> * http://www.stata.com/support/faqs/res/findit.html
> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/
>
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