Code:
xtreg zscore lnasset lnassetsq diverse leverage eeffqr DGS10 CPIAUCSL_PCH GDPC1_PC1, fe
Fixed-effects (within) regression Number of obs = 298,355
Group variable: cert Number of groups = 4,736
R-sq: Obs per group:
within = 0.0179 min = 62
between = 0.0242 avg = 63.0
overall = 0.0227 max = 63
F(8,293611) = 670.17
corr(u_i, Xb) = -0.0196 Prob > F = 0.0000
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zscore | Coef. Std. Err. t P>|t| [95% Conf. Interval]
-------------+----------------------------------------------------------------
lnasset | .4193168 .0420687 9.97 0.000 .3368634 .5017702
lnassetsq | -.0071421 .0016294 -4.38 0.000 -.0103357 -.0039485
diverse | .0000122 .000058 0.21 0.834 -.0001015 .0001259
leverage | -.013206 .0004068 -32.46 0.000 -.0140033 -.0124087
eeffqr | -.0001518 8.33e-06 -18.23 0.000 -.0001681 -.0001355
DGS10 | .0478444 .0021882 21.86 0.000 .0435557 .0521332
CPIAUCSL_PCH | .0676272 .0032808 20.61 0.000 .0611969 .0740575
GDPC1_PC1 | .0310941 .0008967 34.68 0.000 .0293366 .0328516
_cons | -1.795671 .2740217 -6.55 0.000 -2.332746 -1.258596
-------------+----------------------------------------------------------------
sigma_u | 1.7745564
sigma_e | .99459682
rho | .76095759 (fraction of variance due to u_i)
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F test that all u_i=0: F(4735, 293611) = 196.07 Prob > F = 0.0000
