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re: st: panel data
A thought for Stata Corp:
Judging by the frequency a similar question is asked, and having been there
myself, Devendra's question is a very common one when one first begins
working with panel data in Stata. It would be a useful, and probably also a
worthwhile investment of resources if the introduction section of the
"Cross Sectional Time Series" volume of the Stata manual was expanded to
include a discussion of management of time series data, with some
examples. In addition, some of the common questions about examining
various issues related to ts data would benefit from a greater exposition
there..for instance, examining panel level heteroskedasticity, or within
panel autocorrelation of errors. These are common issues, they come up
frequently on the list, and I would guess that they consume a fair amount
of tech support time as well.
Additionally, perhaps an exposition of such points would be worth
considering for a NASUG presentation, or an SJ article.
Just a thought about a seemingly common area of questions
At 09:24 AM 2/20/2004 -0500, you wrote:
I have a longitudinal (panel) data set with variables that are constant over
time (e.g. gender). Some of the entries for an individual are missing
(actually not entered) and I wish to fill in these missing entries.
ID Gender Year
1 M 1991
1 . 1992
1 . 1993
1 M 1994
2 . 1988
2 F 1989
2 . 1990
2 . 1991
Can you suggest a way to fill in these missing entries?
Many thanks in advance.
Devendra Amre MBBS., Ph.D.
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