Hi,
I used xtmixed to run random-tntecept models. Somehow
I could not get the variance components. The results
indicated that "dzeros () not allowed" and "option
notab not allowed". My results are shown in the
following. Could anyone help me delect the problem?
Thank you very much for your help.
Chloe
#delimit;
delimiter now ;
use $mydata\tsui\apd001;
keep country casenum poor d6 hweight wt edlo edmed
edhi couple singmal
> singfem h1 h2 h3 h4 h5 h6 h7 socgdp povlin ey;
gen povrat=ey/povlin;
xtmixed povrat h1 h3 h4 h5 h6 h7 couple singmal d6
edlo edmed socgdp ||
> country:, mle;
Performing EM optimization:
Performing gradient-based optimization:
option dzeros() not allowed
Mixed-effects ML regression Number of
obs = 269680
Group variable: country Number of
groups = 23
Obs per
group: min = 2009
avg = 11725.2
max = 49351
Wald
chi2(12) = 52441.66
Log likelihood = -496979.08 Prob > chi2
= 0.0000
------------------------------------------------------------------------------
povrat |Coef. Std. Err. z P>|z| [95%
Conf. Interval]
-------------+----------------------------------------------------------------
h1 | .404535 .0091609 44.16 0.000
.38658 .42249
h3 |-.1690872 .0109564 -15.43 0.000
-.1905613 -.147613
h4 |-.588056 .0137348 -42.82 0.000
-.6149757 -.5611364
h5 | .3813505 .0120577 31.63 0.000
.3577178 .4049832
h6 | .276558 .0145153 19.05 0.000
.2481085 .3050076
h7 |-.3783761 .0214649 -17.63 0.000
-.4204465 -.3363057
couple | .4134674 .0086097 48.02 0.000
.3965928 .4303421
singmal | .2591511 .0099623 26.01 0.000
.2396253 .278677
d6 | .3258752 .0036663 88.88 0.000
.3186894 .3330611
edlo |-1.301009 .0083116 -156.53 0.000
-1.3173 -1.284719
edmed |-.8359972 .0079362 -105.34 0.000
-.8515519 -.8204426
socgdp |-.0233627 .0107784 -2.17 0.030
-.044488 -.0022374
_cons |2.747971 .2390292 11.50 0.000
2.279483 3.21646
------------------------------------------------------------------------------
------------------------------------------------------------------------------
Random-effects Parameters | Estimate Std. Err.
[95% Conf.
Interval]
-----------------------------+------------------------------------------------
country: Identity |
option notab not allowed
r(198);
#delimit ;
delimiter now ;
exit , clear STATA;
end of do-file
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