Re: st: Meta analysis of diagnostic test?

[Roger Harbord <Roger.Harbord@bristol.ac.uk>]

Deeks, J.W. (2001) 'Systematic reviews of evaluations of diagnostic and 
screening tests', in Egger, Davey Smith & Altman (eds) 'Systematic reviews 
in health care : Meta-analysis in context' (BMJ, London)

- and references therein (refs 4-7 look a good place to start - if you 
can't get access to this book let me know and I'll send you the citations).

I don't know of any specific programs, Stata or otherwise.  The type of 
summary ROC curves used in Figs 14.3-14.5 of the above reference require 
the ability to plot symbols (e.g. squares) of size specified by a variable 
- this doesn't appear to be something you can do with -graph-, only with by 
getting down to -gph- level (someone please correct me if i'm wrong).  The 
book has a chapter about meta-analysis in Stata but whether Jonathan Deeks 
used Stata for the analysis or graphs in this chapter I've no idea - 
personally I'd be quite tempted to use S-plus/R for graphs of this sort.

Hope this is of some help,

Roger.
----------------------------------------------------
Roger Harbord     mailto:roger.harbord@bristol.ac.uk
Department of Social Medicine, University of Bristol



--On 30 November 2002 13:32 +0100 Jannik Helweg-Larsen <jhl@cphiv.dk> wrote:


> I'm trying to get some sort of conclusion from more than 15 very
> heterogenous PCR diagnostic studies.
>
> Considered to do some sort of meta analysis- but I've been unable (by
> findit) to locate any specific Stata programs for such analysis.
>
> Any suggestions or references?. Would summary ROC be useful and has
> anybody written ado for these?
>
> Jannik Helweg-Larsen, MD
> Copenhagen HIV programme
>
>
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