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RE: st: Midas


From   "Seed, Paul" <paul.seed@kcl.ac.uk>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   RE: st: Midas
Date   Tue, 5 Mar 2013 18:24:35 +0000

Claudia Denking has had problems with the
user-written command -midas-.  

-findit midas- brings up one written by 
Ben Dwamena (bdwamena@umich.edu), Division of Nuclear Medicine, 
Department  of Radiology, University of Michigan Health System, 
Ann Arbor; designed for meta-analysis of diagnostic tests; 
integrating results for both sensitivity and specificity, 
without reducing them to a single measure, such as an odds ratio.

. which midas
c:\ado\stbplus\m\midas.ado
*! version 2.00 December 21, 2008
*! version 1.00 August 15, 2007
*! Ben A. Dwamena: bdwamena@umich.edu 

When I updated my copy from version 1 to 2, it initially 
failed to run properly, but had no problems after I closed 
and re-opened Stata.

However, Setor Kunutsor <skk31@medschl.cam.ac.uk>
seems to locate a quite different one , via 
http://www.stata.com/support/faqs/statistics/meta-analysis/ 

*! Version 3.03 19May2009 (author: Michael J Bradburn, 
Jonathan J Deeks, Douglas G Altman.  Centre for Statistics in Medicine, 
University of Oxford, Wolfson College Annexe, Linton Road, Oxford, OX2 6UD, UK)

I think this is really -metan-, another meta-analysis command; 
which is not designed for diagnostic tests, but for 
treatment effects, measured as odds ratios, differences in the mean etc.

If so, there is a newer version : 

. which metan
c:\ado\stbplus\m\metan.ado
*! 3.04 21Sep2010


Best wishes, 


Paul T Seed, Senior Lecturer in Medical Statistics, 
Division of Women's Health, King's College London
Women's Health Academic Centre, King's Health Partners 
(+44) (0) 20 7188 3642.



************************************************
Date: Mon, 4 Mar 2013 09:56:48 -0500
From: <cdenking@bidmc.harvard.edu>
Subject: st: Midas

Hello,

I am trying to use MIDAS for a systematic review.

The command: 
midas tp fp fn tn, bfor ford 
midas tp fp fn tn, bfor 
midas tp fp fn tn, ford

does not seem to be working. I am trying to get a similar output to Revman with the description of the studies on the left and then the forest plot for sensitivity and specificity on the right.

I am using STATA 12. 

Does anyone have experience with this and can help?

Thank you,
Claudia



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