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Re: st: RE: Use of data originating from SPSS


From   Margaret MacDougall <Margaret.MacDougall@ed.ac.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: Use of data originating from SPSS
Date   Thu, 02 Feb 2012 21:37:32 +0000

Thanks for the valued prompt session, Nick. I don't see any sign of my variables appearing as string. They are all being recognized in Stata as being of type double and format %10.0g.

Any further thoughts? I am wondering if the mfp procedure mentioned in my first email requires all variable values or at least those of the dependent variable to appear as numbers (without the value labels showing in the case of categorical variables). I could investigate this possibility but further tried and tested ideas to redeem me form the trial and error approach would be welcome.

Best wishes

Margaret

On 01/02/2012 17:31, Nick Cox wrote:
I don't use SPSS but you should check which variables are regarded as string by Stata. -describe- or -varm- will tell you this. You may need to -encode- or -destring- some variables.

Nick
n.j.cox@durham.ac.uk

Margaret MacDougall

I have recently migrated from SPSS to Stata to allow me to implement
fractional polynomial techniques, including the mfp procure, for a
logistic regression analysis. I have been able to save the original SPSS
file in Stata format. The variables in the SPSS file were of numeric
"Type" (in the sense intended by the SPSS Variable View facility) with
text labels linked to the numerical codes using the SPSS Value Labels
function. On opening up the Stata version of this file, the text labels
appear in the individual columns for the dependent and independent
variables. When I run the code for identifying the Stata file and
running the mfp procedure, the error code r(2000) is generated, pointed
to an absence of observations.

Is it possible that I require to reformat the data in some way for the
procedure to run successfully?

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--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Dr Margaret MacDougall
Medical Statistician and Researcher in Education
Centre for Population Health Sciences
University of Edinburgh Medical School
Teviot Place
Edinburgh EH8 9AG

Tel:  +44 (0)131 650 3211
Fax:  +44 (0)131 650 6909
E-mail:  Margaret.MacDougall@ed.ac.uk
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The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.

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