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Re: st: Identify Categorical/Dichotomous and Continuous Variables


From   Svend Juul <[email protected]>
To   <[email protected]>
Subject   Re: st: Identify Categorical/Dichotomous and Continuous Variables
Date   Sun, 5 Oct 2008 15:44:38 +0200

Frank wrote:
 
I am new to Stata: moved from SPSS a week ago. I am hoping 
that someone can help me with what I imagine is a simple 
issue. I saved an SPSS file as a Stata one. I am working 
my way through the user guide and the data management 
manual, but I am having difficulty with confirming whether 
Stata recognizes variables as continuous (or scale) or 
categorical/dichotomous (or nominal). In SPSS, you can 
easily identify whether the type of measure is a scale, 
nominal, or string with its drop down menu in the variable 
view. It would be a great help, and I would appreciate it 
very much if someone would tell me the method to confirm 
the data type for categorical/dichotomous and for 
continuous variables? Thank you.
 
======================================================
 
As Martin responded: Stata has no formal distinction between
continuous and categorical numeric variables. However, the
command
 
    codebook, compact
 
may tell you what you want. The -Unique- column tells you
how many "unique" (meaning different) values each variable 
has.
 
Hope this helps
Svend
 
________________________________________________________ 
 
Svend Juul
Institut for Folkesundhed, Afdeling for Epidemiologi
(Institute of Public Health, Department of Epidemiology)
Vennelyst Boulevard 6 
DK-8000 Aarhus C,  Denmark 
Phone, work:   +45 8942 6090 
Phone, home:   +45 8693 7796 
Fax:           +45 8613 1580 
E-mail:        [email protected] 
_________________________________________________________ 

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