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st: Data management/analysis


From   "Banya, Winston" <w.banya@ic.ac.uk>
To   "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject   st: Data management/analysis
Date   Mon, 8 Jul 2002 16:56:20 +0100

Dear All,

I am working on a small dataset and most of the variables are skewed. In
this data 2 'observers' give an opinion and in some instances they do agree.
I want to find out the difference in response when they both agree on a
variable.

For example in this dataset the age of the people was given, and the two
observers are asked to state a preferred method of  treating the subjects
and I want to find out using non parametric methods if there is any
difference in age when the 2 observers choose the same method of treatment.
That is if the method is 'A'  for example, I am interested in any difference
when they choose method A.  Note that in some cases they both agree on A and
in some cases they do not and so the groups cannot be mutually exclusive. Is
there a way of handling this in STATA such that if observer 1 says yes 15
times and no 12 times, while  observer 2 says yes 18 times and no 9 times
then I can only compare when they said yes. However I want to treat the
responses as if there were no times when they said ties together even though
they did.  



Winston Banya
Care of The Elderly Section
Imperial College School of Medicine
Hammersmith Campus
Du Cane Road
London W12 0NN
U.K

Tel:  +44 (0)20 8383 4284
Fax: +44 (0)20 8743 0798
Email: w.banya@ic.ac.uk


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