谁能帮我看一下这个gmm检验结果怎么样,其实我不是很懂那几个检验的符合条件是怎样,能解释一下就更好了,谢谢~~
Dynamic panel-data estimation, one-step difference GMM
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Group variable: province_dum Number of obs = 99
Time variable : year Number of groups = 11
Number of instruments = 18 Obs per group: min = 9
Wald chi2(3) = 416.87 avg = 9.00
Prob > chi2 = 0.000 max = 9
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| Robust
emp | Coef. Std. Err. z P>|z| [95% Conf. Interval]
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emp |
L1. | 1.039344 .0923444 11.26 0.000 .8583519 1.220335
|
fdi |
--. | .0472922 .0403872 1.17 0.242 -.0318653 .1264497
L1. | -.0007017 .0650219 -0.01 0.991 -.1281422 .1267388
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Instruments for first differences equation
GMM-type (missing=0, separate instruments for each period unless collapsed)
L2.(emp fdi)
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Arellano-Bond test for AR(1) in first differences: z = -1.83 Pr > z = 0.067
Arellano-Bond test for AR(2) in first differences: z = 1.47 Pr > z = 0.142
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Sargan test of overid. restrictions: chi2(15) = 23.20 Prob > chi2 = 0.080
(Not robust, but not weakened by many instruments.)
Hansen test of overid. restrictions: chi2(15) = 5.74 Prob > chi2 = 0.984
(Robust, but weakened by many instruments.)