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Re: st: Repeated time values within panel in levpet STATA output
From
"Brian P. Poi" <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: Repeated time values within panel in levpet STATA output
Date
Mon, 1 Mar 2010 08:27:13 -0600 (CST)
On Sun, 28 Feb 2010, Worku Gebeyehu wrote:
Dear Sir/Madam,
I am a PhD student doing my research on TFP of a panel of firms for the
period 1996 to 2007 and the total number of observations are 8395. I
have been trying to excute the following levpet command. levpet lny ,
free(lnl2 lnirm lnlrm) proxy (lnpower) capital (lnk) revenue justid grid
i (eid) t (yr) reps (50)
However, I have been facing a problem of 'repeated time values within
panel'. I have not faced a similar problem while estimating the same
using FE, RE, OP, etc. I also tried to check the existence of
dublications of years or firm idenity numbers using the stata 'dublicate
report' command, I got a report of 'surplus=0'. Using set tr on, I found
the following report. Because I am unable to understand what it means
due to lack of knowldge in programming, I sent you with all the junk. I
am sorry for that. I am stuck and strongly need your support.
If Worku would send the dataset directly to me ([email protected]), I'd be
happy to look into the cause of this problem.
-- Brian Poi (coauthor of -levpet-)
-- [email protected]
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