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From | "Sacamano, Paul L." <psacaman@jhsph.edu> |
To | "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |
Subject | Re: st: RE: logit for case control |
Date | Fri, 14 Dec 2012 05:49:24 -0500 |
Yep, that makes sense. Thanks for the feedback. Paul On Dec 14, 2012, at 1:05 AM, Kieran McCaul <kieran.mccaul@uwa.edu.au> wrote: > ... > > -logit- and -logistic- are the same regression method. The only difference between them is that -logit- gives beta coefficients by default and -logistic- gives odds ratios by default. > > If you have frequency matched the controls to the cases, then you will need a categorical age variable that defines the age strata used and this will need to be in the model as well. > > > > -----Original Message----- > From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Sacamano, Paul L. > Sent: Friday, 14 December 2012 5:05 AM > To: statalist@hsphsun2.harvard.edu > Subject: st: logit for case control > > Hello, > > I've been using logit for a case control database, but not sure this is the most appropriate analysis to run. > > The controls were loosely matched (not paired) by age frequency distribution. > > The outcome is binary: 30-day hospital readmission (case) or no (control). > > The independent variables are categorical (race, insurance, admission diagnosis, etc.) and continuous (age, number of clinic visits, etc.) and dichotomous (yes or no for HCV, CKD, etc.). > > Here's an example of what I've been using: > . logit case admgroup sex insurance zip race > and . logistic case admgroup sex insurance zip race > > Does this seem to be the correct approach? > > Thanks so much. > Paul > * > * 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/ > > * > * 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/ * * 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/