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st: compare small sample size with very large sample size


From   Caliph Omar Moumin <sheikmoumin@yahoo.com>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   st: compare small sample size with very large sample size
Date   Fri, 27 Apr 2012 03:28:03 -0700 (PDT)

Cost Comparison:
 
based on patient admission and treatment duration for non-alcohol related diagnosis.
 
 
                                                    Groups
Alcoholic group                       vs.                               Non alcoholic group
 
Sample 43 patients                     Vs.                             sample size 21,028 patients
            107observations               Vs.                                               24,204 observations
 
The data is obtained from a patient registry.
Is it possible  to compare such small sample size with very large group??????????????????? if yes what is stata command should i apply????
..If that is no, which i think it is! How about selecting 50 patients from the non alcoholic group???? will that lead to a bias??
Could anyone please comment?????
Kind Regards,
Moumin

Email:  sheikmoumin@yahoo.com 

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