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Re: st: Combining catagories of risk


From   Claire Rushton <[email protected]>
To   [email protected]
Subject   Re: st: Combining catagories of risk
Date   Fri, 28 Mar 2014 10:58:23 +0000

Thank you for this. However the groups I am considering combining are
mutually exclusive and for the same outcome. For example they are two
groups of patients that were stratified by their different levels of
renal dysfunction. I want to extract a single estimate for both groups
of patients with 'any dysfunction'. I am looking for the most
appropriate way of averaging the groups.

Any advice - much appreciated.

Claire



On 28 March 2014 10:47, Seed, Paul <[email protected]> wrote:
> Tim is quite right.  Your only valid option is to contact the authors asking for more information
> (You might get lucky).  Any method based on combining estimates for separate outcomes
> involves assumptions that cannot be tested.
>
> Best wishes,
>
>
> - -----Original Message-----
> From: [email protected] [mailto:[email protected]] On Behalf Of Claire Rushton
> Sent: 26 March 2014 21:40
> To: [email protected]
> Subject: st: Combining catagories of risk
>
> A study has produced risk estimates by different catagories of renal
> dysfunction. To produce an overall risk estimate of 'any renal
> dysfunction' is it appropriate to combine the risk estimates from the
> different categories of renal dysfunction? (The estimates are hazard
> ratios).
>
> If it is appropriate could METAN be used for this?
>
> Thank you
> Claire
> - --
>
>
> Paul T Seed, Women's Health, KCL
>
>
>
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-- 
Claire A Rushton
Lecturer in Nursing and NIHR Doctoral Research Fellow
Health Services Research Unit
Innovation Centre 1
Keele University
Staffordshire
ST5 5NB
Telephone: 01782 733768
Email: [email protected]
*
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*   http://www.ats.ucla.edu/stat/stata/


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