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Re: st: Xtreg, fe Error: insufficient observation
From
Maarten Buis <[email protected]>
To
[email protected]
Subject
Re: st: Xtreg, fe Error: insufficient observation
Date
Wed, 10 Jul 2013 10:32:31 +0200
On Tue, Jul 9, 2013 at 6:23 PM, Tate wrote:
> When I write the command:
> xtreg flu_i_tot stock_t1 u_dest gini old_dep_ra c_lav l_prod pileu
> s_prot_exp, fe, if stato==10 & stato==5 & stato==6 & stato==13
> Stata gives me the error message insufficient observation.
The problem is your -if- condition. As you have written it now an
observation is included if it is simultaneously from state 10, 5, 6,
and 13, and obviously no observation meets that criterium and 0
observations is not quite sufficient to estimate an -xtreg- model,
which is what the error message complaints about. You could replace
-&- (and) with -|- (or), or write that -if- condition as -if
inlist(stato, 10, 5, 6, 13)-.
Hope this helps,
Maarten
---------------------------------
Maarten L. Buis
WZB
Reichpietschufer 50
10785 Berlin
Germany
http://www.maartenbuis.nl
---------------------------------
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