At 08:59 PM 3/16/2004 -0500, Judet Roqueta wrote:
Is there a way to have Stata identify observations that have equivalent
values for a given variable? Speficically, I want to trim my dataset to
individuals that live in the same household using a household id
variable. I want to get rid of those that live alone. I tried using
the egen tag and egen group commands, but that did not help.
Is this what you want?
. egen x = count(id), by(id)
. drop if x==1
To follow up -- if id is missing, x gets coded 0. So, if you have missing
data on the id variable, and you also want such cases dropped, a better
coding would be
