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Re: st: R: Pooled effects for continuous data


From   Louisa Lam <[email protected]>
To   [email protected]
Subject   Re: st: R: Pooled effects for continuous data
Date   Thu, 13 Nov 2008 16:23:57 +1100

Dear Carlo,

Thanks for the information. It is very helpful to know that Stata can be used for meta-analysis. However, after reading through all the functions, I still couldn't find anything to caculate the pooled effect for 'medians and IQR' and the pooled effects for 'different in cost and its 95% CI'.

For example for hospital length of stay(unit in days):
Study 1 median: 45      IQR: 36, 50
Study 2 median: 32      IQR: 28, 40
Study 3 median: 17      IQR: 12. 22
Study 4 median: 28     IQR: 23, 38

Is there anyway to caculate an effect estimate and a 95% CI of the above 4 studies?

Louisa


Carlo Lazzaro wrote:
Dear Louisa,
The following ones may of interest fot your research purposes.

Kind Regards,

Carlo (A Stata 9.2/SE user)

----------------------------------------------------------------------------
------------------------------------------------
search for metan
(manual:  [R] search)
----------------------------------------------------------------------------
------------------------------------------------

        Keywords:  metan
          Search:  (1) Official help files, FAQs, Examples, SJs, and STBs


Search of official help files, FAQs, Examples, SJs, and STBs

FAQ     . . . . . . . . . . . User-written packages for meta-analysis in
Stata
        . . . . . . . . . .  J. Sterne, R. Harris, R. Harbord, and T.
Steichen
        1/07    What meta-analysis features are available in
                Stata?
                http://www.stata.com/support/faqs/stat/meta.html

SJ-4-2  pr0012  . . . . . . . . Submenu and dialogs for meta-analysis
commands
        (help meta_dialog if installed) . . . . . . . . . . . . T. J.
Steichen
        Q2/04   SJ 4(2):124--126
        provides Stata dialog boxes and commands to create a submenu
        for publicly available meta-analysis commands

SJ-4-2  st0061  . . . . . . . . . . . . . . . .  Funnel plots in
meta-analysis
        (help metafunnel if installed)  . .  J. A. C. Sterne and R. M.
Harbord
        Q2/04   SJ 4(2):127--141
        discusses funnel plots, possible causes of asymmetry, and
        the metafunnel command

STB-45  sbe24.1 . . . . . . . . . . . . . . . . . .  Correction to funnel
plot
        (help funnel if installed)  . . . M. Bradburn, J. Deeks, and D.
Altman
        9/98    p.21; STB Reprints Vol 8, p.100

STB-44  sbe24 . . . . . . . . .  metan -- an alternative meta-analysis
command
        (help metan if installed) . . . . . . . . .  Bradburn, Deeks, &
Altman
        7/98    pp.4--15; STB Reprints Vol 8, pp.86--100
        meta-analysis command for studies with two groups

(end of search)
-----Messaggio originale-----
Da: [email protected]
[mailto:[email protected]] Per conto di Louisa Lam
Inviato: martedì 11 novembre 2008 5.07
A: Statistic Help
Oggetto: st: Pooled effects for continuous data

I am doing a meta-analysis which I need to calculate the pooled effects for continuous data from a group of studies.
For example:
For length of stay, all the data from different studies were presented in medians and IQR
For cost, all the data were presented in 'different in cost' and 95% CI

Is there anyway to calculate the pooled effects of the above using Stata?
If yes, please show me the syntax for such calculations.
Thank you.

Louisa

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