Olga wrote:
There are two binary variables in my sample, where 1
is presence and 0 is absence of the particular
characteristic. I want to identify those cases where I
get either both 0's or both 1's
======================================================
If the two binary variables are -a- and -b- :
generate x=a+b
When x is 0, both are 0. When x is 2, both are 1.
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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