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st: tsset

From   "ALICE DOBSON" <>
Subject   st: tsset
Date   Sun, 28 Aug 2005 10:59:17 -0400

Hi statalisters,
I have an unbalanced panel (3000 firms) for the period 1970-1976. However, a few firms have missing values for some years. The number of such firms is very few. When I tsset the time variable, Stata naturally states:
year, 1970 to 1976, but with gaps

My question is (a) does Stata's xtreg or xtabond or other panel data regression techniques ignore such observations? (b) what is the downside of such missing values?


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