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st: RE: To expand the value of a constant variable across the panel
From
"Nick Cox" <[email protected]>
To
<[email protected]>
Subject
st: RE: To expand the value of a constant variable across the panel
Date
Thu, 1 Apr 2010 18:54:40 +0100
This point is addressed in detail in an FAQ.
FAQ . . . . . . . . . . . . . . . . . . . . . . . Replacing missing values
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N. J. Cox
2/03 How can I replace missing values with previous or
following nonmissing values?
http://www.stata.com/support/faqs/data/missing.html
See also
FAQ . . . . . . Listing observations in a group that differ on a variable
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N. J. Cox
11/01 How do I list observations in a group that differ
on a variable?
http://www.stata.com/support/faqs/data/diff.html
Nick
[email protected]
Eduardo Nunez
I have longitudinal data where patients have information on several timepoints.
Some values from constant variables are missing. How should I fill in
these observations across the panel (pte id)?
Example:
pid visit# gender
1 1 1
1 2 .
1 3 .
1 4 1
2 1 .
2 2 .
2 3 0
2 4 .
etc..................
I did tried the ssc program "enlarge" but reported error when values
existed more than once (as in pte 1).
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