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st: RE: CI to SE


From   "Newson, Roger B" <r.newson@imperial.ac.uk>
To   "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject   st: RE: CI to SE
Date   Wed, 22 Jul 2009 21:46:08 +0100

I think what you are looking for might be the -invcise- package, downloadable from SSC. You probably need to get your confidence intervals into a dataset (or resultsset) with 1 observation per confidence interval, and data on hazard ratios, lower confidence intervals and upper confidence intervals. And you probably also need to use the -eformestimate()- option of -invcise-. (Or, alternatively, convert the estimate and confidence limits to logs, and then calculate the standard error of the log of the hazard ratio.)

I hope this helps.

Best wishes

Roger 


Roger B Newson BSc MSc DPhil
Lecturer in Medical Statistics
Respiratory Epidemiology and Public Health Group
National Heart and Lung Institute
Imperial College London
Royal Brompton Campus
Room 33, Emmanuel Kaye Building
1B Manresa Road
London SW3 6LR
UNITED KINGDOM
Tel: +44 (0)20 7352 8121 ext 3381
Fax: +44 (0)20 7351 8322
Email: r.newson@imperial.ac.uk 
Web page: http://www.imperial.ac.uk/nhli/r.newson/
Departmental Web page:
http://www1.imperial.ac.uk/medicine/about/divisions/nhli/respiration/popgenetics/reph/

Opinions expressed are those of the author, not of the institution.

-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Sripal Kumar
Sent: 22 July 2009 18:01
To: statalist
Subject: st: CI to SE

 Hi,
This might sound like a very basic question--I am trying to convert
95% CI for hazard ratio into standard error.  Is there a stata command
to do that.  My data is in the form of hazard ratio, LCI, UCI.
thanks,
Sripal.

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