---- Coefficients ----
| (b) (B) (b-B) sqrt(diag(V_b-V_B))
| fixed random Difference S.E.
-------------+----------------------------------------------------------------
lnformcode | -.0108673 .0038563 -.0147236 .
lncomnubg | -.0043171 -.0315944 .0272773 .
lncomnubp | .0062418 .000722 .0055198 .
lntherapysub | -.0443159 .0105997 -.0549155 .0027737
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b = consistent under Ho and Ha; obtained from xtreg
B = inconsistent under Ha, efficient under Ho; obtained from xtreg
Test: Ho: difference in coefficients not systematic
chi2(4) = (b-B)'[(V_b-V_B)^(-1)](b-B)
= -109.73 chi2<0 ==> model fitted on these
data fails to meet the asymptotic
assumptions of the Hausman test;
see suest for a generalized test