inf |
------------------------------------------------------------------------------
.
. vif
Variable | VIF 1/VIF
-------------+----------------------
| | 7.17 | 0.139550 | |
inf | | | 6.46 | 0.154878 |
size | | | 2.42 | 0.413271 |
exr | | | 2.39 | 0.419267 |
llr | | | 2.09 | 0.478990 |
eff | | | 1.84 | 0.543427 |
unr | | | 1.81 | 0.551458 |
ggdp | | | 1.76 | 0.568053 |
nii | | | 1.72 | 0.582485 |
npl | | | 1.68 | 0.594872 |
lev | | | 1.60 | 0.625316 |
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Xem toàn bộ 168 trang tài liệu này.
-------------+----------------------
Mean VIF | 2.81
.
. imtest,white
White's test for Ho: homoskedasticity
against Ha: unrestricted heteroskedasticity
chi2(67) = 140.01
Prob > chi2 = 0.0000
Cameron & Trivedi's decomposition of IM-test
---------------------------------------------------
Source | chi2 df p
---------------------+-----------------------------
140.01 | 67 | 0.0000 | |
Skewness | | 19.52 | 11 | 0.0523 |
Kurtosis | 2.49 1 0.1148
---------------------+----------------------------- Total | 162.02 79 0.0000
---------------------------------------------------
.
. est sto P22
.
. xtreg roa npl llr eff lev nii size ggdp inf unr exr inr,fe
Number of obs | = | 230 | |
Group variable: donvi | Number of groups | = | 26 |
Obs per group: min = | 6 | |
between = 0.2840 | avg = | 8.8 |
overall = 0.4134 | max = | 11 |
F(11,193) | = | 22.05 | |
corr(u_i, Xb) = -0.4515 | Prob > F | = | 0.0000 |
------------------------------------------------------------------------------
roa | Coef. Std. Err. t P>|t| [95% Conf. Interval]
-------------+----------------------------------------------------------------
| | -.0652647 | .0325111 | -2.01 | 0.046 | -.1293874 | -.001142 | |
llr | | | .0710326 | .1092248 | 0.65 | 0.516 | -.1443949 | .2864602 |
eff | | | -.0197032 | .0033034 | -5.96 | 0.000 | -.0262186 | -.0131877 |
lev | | | -.0111563 | .0049505 | -2.25 | 0.025 | -.0209203 | -.0013923 |
nii | | | .0042594 | .0025696 | 1.66 | 0.099 | -.0008088 | .0093275 |
size | | | -.0048707 | .001178 | -4.13 | 0.000 | -.007194 | -.0025473 |
ggdp | | | .0015544 | .0007628 | 2.04 | 0.043 | .00005 | .0030588 |
inf | | | -.0005049 | .0001424 | -3.55 | 0.000 | -.0007858 | -.000224 |
unr | | | -.0008875 | .0016844 | -0.53 | 0.599 | -.0042097 | .0024347 |
exr | | | 3.87e-07 | 4.44e-07 | 0.87 | 0.384 | -4.89e-07 | 1.26e-06 |
inr | | | .0018085 | .0004323 | 4.18 | 0.000 | .000956 | .0026611 |
_cons | | | .0886641 | .0163241 | 5.43 | 0.000 | .0564676 | .1208605 |
-------------+----------------------------------------------------------------
sigma_u | .00464762
sigma_e | .00528776
rho | .43583581 (fraction of variance due to u_i)
------------------------------------------------------------------------------
F test that all u_i=0: F(25, 193) = 2.78 Prob > F = 0.0000
.
. est sto F22
.
. esttab F22
----------------------------
(1)
roa
----------------------------
npl -0.0653*
(-2.01)
llr 0.0710
(0.65)
eff -0.0197***
(-5.96)
lev -0.0112*
(-2.25)
nii 0.00426
(1.66)
size -0.00487*** (-4.13)
ggdp 0.00155*
(2.04)
inf -0.000505*** (-3.55)
unr -0.000888
(-0.53)
exr 0.000000387
(0.87)
inr 0.00181***
(4.18)
_cons 0.0887***
(5.43)
---------------------------- N 230
----------------------------
t statistics in parentheses
* p<0.05, ** p<0.01, *** p<0.001
.
. xtreg roa npl llr eff lev nii size ggdp inf unr exr inr,re
Number of obs | = | 230 | |
Group variable: donvi | Number of groups | = | 26 |
Obs per group: min = | 6 | |
between = 0.5420 | avg = | 8.8 |
overall = 0.5329 | max = | 11 |
Wald chi2(11) | = | 250.83 | ||
corr(u_i, X) | = 0 (assumed) | Prob > chi2 | = | 0.0000 |
------------------------------------------------------------------------------
roa | Coef. Std. Err. z P>|z| [95% Conf. Interval]
-------------+----------------------------------------------------------------
| | -.0757023 | .0318431 | -2.38 | 0.017 | -.1381136 | -.0132909 | |
llr | | | .0286104 | .0929865 | 0.31 | 0.758 | -.1536398 | .2108606 |
eff | | | -.0196581 | .0029449 | -6.68 | 0.000 | -.02543 | -.0138862 |
lev | | | -.0180926 | .0043828 | -4.13 | 0.000 | -.0266827 | -.0095025 |
nii | | | .0009082 | .0024321 | 0.37 | 0.709 | -.0038587 | .005675 |
size | | | -.0017328 | .0005108 | -3.39 | 0.001 | -.0027339 | -.0007317 |
ggdp | | | .0016781 | .000764 | 2.20 | 0.028 | .0001806 | .0031755 |
inf | | | -.0004752 | .0001464 | -3.25 | 0.001 | -.0007621 | -.0001883 |
unr | | | -.001524 | .0017421 | -0.87 | 0.382 | -.0049384 | .0018904 |
exr | | | -6.17e-07 | 2.84e-07 | -2.17 | 0.030 | -1.17e-06 | -5.99e-08 |
inr | | | .00168 | .0004402 | 3.82 | 0.000 | .0008172 | .0025428 |
_cons | | | .0616223 | .012065 | 5.11 | 0.000 | .0379754 | .0852693 |
-------------+----------------------------------------------------------------
sigma_u | .00151741
sigma_e | .00528776
rho | .07608385 (fraction of variance due to u_i)
.
. est sto R22
.
. hausman F22 R22
Note: the rank of the differenced variance matrix (10) does not equal the number of coefficients being tested (11); be
sure this is what you expect, or there may be problems computing the test. Examine the output of
your
estimators for anything unexpected and possibly consider scaling your variables so that the coefficients are on
a similar scale.
---- Coefficients ----
(b) | (B) | (b-B) | sqrt(diag(V_b-V_B)) | |
| | F22 | R22 | Difference | S.E. |
-------------+----------------------------------------------------------------
| | -.0652647 | -.0757023 | .0104375 | .0065566 | |
llr | | | .0710326 | .0286104 | .0424222 | .0573024 |
eff | | | -.0197032 | -.0196581 | -.000045 | .0014967 |
lev | | | -.0111563 | -.0180926 | .0069363 | .0023018 |
nii | | | .0042594 | .0009082 | .0033512 | .0008294 |
size | | | -.0048707 | -.0017328 | -.0031379 | .0010615 |
ggdp | | | .0015544 | .0016781 | -.0001237 | . |
inf | | | -.0005049 | -.0004752 | -.0000297 | . |
unr | | | -.0008875 | -.001524 | .0006365 | . |
exr | | | 3.87e-07 | -6.17e-07 | 1.00e-06 | 3.41e-07 |
inr | | | .0018085 | .00168 | .0001285 | . |
------------------------------------------------------------------------------
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(10) = (b-B)'[(V_b-V_B)^(-1)](b-B)
= 74.01
Prob>chi2 = 0.0000
(V_b-V_B is not positive definite)
.
. xttest0
roa[donvi,t] = Xb + u[donvi] + e[donvi,t]
Estimated results:
| Var sd = sqrt(Var)
---------+-----------------------------
.0000689 | .0082996 | |
e | | .000028 | .0052878 |
u | | 2.30e-06 | .0015174 |
Test: Var(u) = 0
chibar2(01) = 9.40
Prob > chibar2 = 0.0011
.
. xtgls roa npl llr eff lev nii size ggdp inf unr exr inr,igls panels(h) nolog
Cross-sectional time-series FGLS regression
Coefficients: generalized least squares Panels: heteroskedastic Correlation: no autocorrelation
= | 26 | Number of obs = | 230 | |
Estimated autocorrelations | = | 0 | Number of groups = | 26 |
Estimated coefficients | = | 12 | Obs per group: min = | 6 |
avg = | 8.846154 | |||
max = | 11 | |||
Wald chi2(11) = | 710.83 | |||
Log likelihood | = | 924.1284 | Prob > chi2 = | 0.0000 |
------------------------------------------------------------------------------
roa | Coef. Std. Err. z P>|z| [95% Conf. Interval]
-------------+----------------------------------------------------------------
-.0600821 | .0234091 | -2.57 | 0.010 | -.1059631 | -.0142012 | |
llr | | -.0803953 | .0508784 | -1.58 | 0.114 | -.1801152 | .0193247 |
eff | | -.0326638 | .0022008 | -14.84 | 0.000 | -.0369773 | -.0283503 |
lev | | -.0126982 | .0039728 | -3.20 | 0.001 | -.0204848 | -.0049116 |
nii | | .003087 | .0016904 | 1.83 | 0.068 | -.000226 | .0064001 |
.0002914 | -2.10 | 0.035 | -.0011843 | -.0000421 | ||
ggdp | | -.0001416 | .0004825 | -0.29 | 0.769 | -.0010873 | .0008041 |
inf | | -.0002171 | .0000876 | -2.48 | 0.013 | -.0003889 | -.0000454 |
unr | | -.0001898 | .0010021 | -0.19 | 0.850 | -.0021539 | .0017743 |
exr | | -2.15e-07 | 1.74e-07 | -1.24 | 0.216 | -5.55e-07 | 1.26e-07 |
inr | | .0009886 | .0002662 | 3.71 | 0.000 | .0004668 | .0015105 |
_cons | | .0478218 | .0074706 | 6.40 | 0.000 | .0331796 | .062464 |
size |
------------------------------------------------------------------------------
.
. est sto G22
.
. esttab P22 F22 R22 G22,r2 star(* 0.1 ** 0.05 *** 0.01) brackets nogap
----------------------------------------------------------------------------
(2) | (3) | (4) | ||
roa | roa | roa | roa | |
---------------------------------------------------------------------------- | ||||
npl | -0.0858*** | -0.0653** | -0.0757** | -0.0601** |
[-2.67] | [-2.01] | [-2.38] | [-2.57] | |
llr | 0.00831 | 0.0710 | 0.0286 | -0.0804 |
[0.10] | [0.65] | [0.31] | [-1.58] | |
eff | -0.0200*** | -0.0197*** | -0.0197*** | -0.0327*** |
[-7.02] | [-5.96] | [-6.68] | [-14.84] | |
lev | -0.0193*** | -0.0112** | -0.0181*** | -0.0127*** |
[-4.45] | [-2.25] | [-4.13] | [-3.20] | |
nii | -0.000167 | 0.00426* | 0.000908 | 0.00309* |
[-0.07] | [1.66] | [0.37] | [1.83] | |
size | -0.00145*** | -0.00487*** | -0.00173*** | -0.000613** |
[-3.29] | [-4.13] | [-3.39] | [-2.10] | |
ggdp | 0.00166** | 0.00155** | 0.00168** | -0.000142 |
[2.10] | [2.04] | [2.20] | [-0.29] | |
inf | -0.000481*** | -0.000505*** | -0.000475*** | -0.000217** |
[-3.15] | [-3.55] | [-3.25] | [-2.48] | |
unr | -0.00180 | -0.000888 | -0.00152 | -0.000190 |
[-0.99] | [-0.53] | [-0.87] | [-0.19] | |
exr | -0.000000724** | 0.000000387 | -0.000000617** | -0.000000215 |
[-2.58] | [0.87] | [-2.17] | [-1.24] | |
inr | 0.00168*** | 0.00181*** | 0.00168*** | 0.000989*** |
[3.67] | [4.18] | [3.82] | [3.71] | |
_cons | 0.0615*** | 0.0887*** | 0.0616*** | 0.0478*** |
[5.08] [5.43] [5.11] [6.40]
----------------------------------------------------------------------------
230 | 230 | 230 | 230 | |
R-sq | 0.535 | 0.557 |
----------------------------------------------------------------------------
t statistics in brackets
* p<0.1, ** p<0.05, *** p<0.01