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| From | "Seed, Paul" <paul.seed@kcl.ac.uk> |
| To | "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |
| Subject | RE: st: Combining catagories of risk |
| Date | Fri, 28 Mar 2014 10:47:41 +0000 |
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: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Claire Rushton Sent: 26 March 2014 21:40 To: statalist@hsphsun2.harvard.edu 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 * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/