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st: RE: RE: Variable generation
Dear Nick,
Thank you
Manos
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Nick Cox
Sent: 11 February 2008 17:45
To: [email protected]
Subject: st: RE: Variable generation
bysort hid (var1) : gen var2 = var1[1]
For more detail, see
FAQ Replacing missing values
How can I replace missing values with previous or following nonmissing
values?
http://www.stata.com/support/faqs/data/missing.html
Your problem is only a twist away from that discussed in the FAQ.
However, in general you need to check that each -hid- is characterised
by at most one non-missing value on -var1-. See also
FAQ Number of distinct observations
How do I compute the number of distinct observations?
http://www.stata.com/support/faqs/data/distinct.html
Nick
[email protected]
Mentzakis, Emmanouil
I have a variable that identifies the household (hid), a variable that
identifies the number that each individual has within the household
(pid) and finally a variable that has some values of interest (present
only for some individuals).
I would like to create a new variable (var2) that has the value of var1
for all the pid in the same hid (as in the example below).
hid pid var1 var2
1 1 10 10
1 2 10
2 1 6
2 2 6 6
2 3 6 6
2 4 6
3 4 8 8
3 5 8
One way to do it is:
by hid: egen var2=mean(var1)
However, I was wondering if there was any command that rather than
taking averages, could copy that value to everybody with the same hid.
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* http://www.ats.ucla.edu/stat/stata/