h3327156 发表于 2013-11-1 01:38 
按理,指令后面加个 first 就会出现楼主要的。
参考看看。
1、针对xtivreg2,........fe gmm2s robust cluster(id), 按您说的如下:
. xtivreg tci2 hc1 lnphycaprkna_emp lnlabcyp005 lnfdis05 institution100 (ln
> prca= L.lnprca co2cap_pt co2gdp_pt), fe first
First-stage within regression
Fixed-effects (within) regression Number of obs = 540
Group variable: reporter Number of groups = 54
R-sq: within = 0.7069 Obs per group: min = 10
between = 0.9123 avg = 10.0
overall = 0.9027 max = 10
F(8,478) = 144.10
corr(u_i, Xb) = 0.1710 Prob > F = 0.0000
-------------------------------------------------------------------------------
lnprca | Coef. Std. Err. t P>|t| [95% Conf. Interval]
--------------+----------------------------------------------------------------
hc1 | .0800572 .0525111 1.52 0.128 -.023124 .1832384
lnphycaprk~mp | .0236873 .0277748 0.85 0.394 -.0308886 .0782631
lnlabcyp005 | -.0376327 .015873 -2.37 0.018 -.0688222 -.0064431
lnfdis05 | .0348795 .0079455 4.39 0.000 .0192671 .0504919
instituti~100 | .0000116 .0007621 0.02 0.988 -.0014859 .0015091
|
lnprca |
L1. | .4582842 .0377059 12.15 0.000 .3841944 .532374
|
co2cap_pt | -.0047182 .0010058 -4.69 0.000 -.0066945 -.0027419
co2gdp_pt | .0055343 .0014313 3.87 0.000 .0027219 .0083466
_cons | 4.524772 .3646652 12.41 0.000 3.808227 5.241317
--------------+----------------------------------------------------------------
sigma_u | .09290369
sigma_e | .03892351
rho | .85067814 (fraction of variance due to u_i)
-------------------------------------------------------------------------------
F test that all u_i=0: F(53, 478) = 4.47 Prob > F = 0.0000
Fixed-effects (within) IV regression Number of obs = 540
Group variable: reporter Number of groups = 54
R-sq: within = 0.1433 Obs per group: min = 10
between = 0.1136 avg = 10.0
overall = 0.1149 max = 10
Wald chi2(6) = 1003.97
corr(u_i, Xb) = -0.3235 Prob > chi2 = 0.0000
-------------------------------------------------------------------------------
tci2 | Coef. Std. Err. z P>|z| [95% Conf. Interval]
--------------+----------------------------------------------------------------
lnprca | .3035708 .0982278 3.09 0.002 .1110478 .4960938
hc1 | -.0737251 .073113 -1.01 0.313 -.2170239 .0695737
lnphycaprk~mp | .2345187 .0388015 6.04 0.000 .158469 .3105683
lnlabcyp005 | -.0809598 .0175863 -4.60 0.000 -.1154282 -.0464914
lnfdis05 | -.0401354 .0119169 -3.37 0.001 -.0634922 -.0167787
instituti~100 | .0014518 .0010385 1.40 0.162 -.0005837 .0034873
_cons | -4.860033 .751207 -6.47 0.000 -6.332372 -3.387695
--------------+----------------------------------------------------------------
sigma_u | .19147993
sigma_e | .05352864
rho | .9275152 (fraction of variance due to u_i)
-------------------------------------------------------------------------------
F test that all u_i=0: F(53,480) = 76.51 Prob > F = 0.0000
-------------------------------------------------------------------------------
Instrumented: lnprca
Instruments: hc1 lnphycaprkna_emp lnlabcyp005 lnfdis05 institution100
L.lnprca co2cap_pt co2gdp_pt
-------------------------------------------------------------------------------
2、对这个命令
ivregress gmm tci2 hc1 lnphycaprkna_emp lnlabcyp005 lnfdis05 institution100 (lnprca= L.lnprca co2cap_pt co2gdp_pt), wmatrix (cluster reporter)、用的是如下的回归
ivregress gmm tci2 hc1 lnphycaprkna_emp lnlabcyp005 lnfdis05 institution100 (lnprca= L.lnprca co2cap_pt co2gdp_pt), first
. ivregress gmm tci2 hc1 lnphycaprkna_emp lnlabcyp005 lnfdis05 institution100 (lnprca=
> L.lnprca co2cap_pt co2gdp_pt), first
First-stage regressions
-----------------------
Number of obs = 540
F( 8, 531) = 2152.63
Prob > F = 0.0000
R-squared = 0.9796
Adj R-squared = 0.9793
Root MSE = 0.0452
----------------------------------------------------------------------------------
| Robust
lnprca | Coef. Std. Err. t P>|t| [95% Conf. Interval]
-----------------+----------------------------------------------------------------
hc1 | -.0117086 .0134836 -0.87 0.386 -.0381963 .0147791
lnphycaprkna_emp | -.0187146 .0082309 -2.27 0.023 -.0348837 -.0025456
lnlabcyp005 | -.0093766 .0098755 -0.95 0.343 -.0287765 .0100233
lnfdis05 | -.0012515 .001269 -0.99 0.324 -.0037444 .0012413
institution100 | -.0007471 .0003148 -2.37 0.018 -.0013655 -.0001286
|
lnprca |
L1. | .9453211 .0150483 62.82 0.000 .9157596 .9748826
|
co2cap_pt | -.0018794 .0006168 -3.05 0.002 -.0030911 -.0006676
co2gdp_pt | .0020754 .0007135 2.91 0.004 .0006737 .003477
_cons | .8781927 .1966162 4.47 0.000 .4919517 1.264434
----------------------------------------------------------------------------------
Instrumental variables (GMM) regression Number of obs = 540
Wald chi2(6) = 364.56
Prob > chi2 = 0.0000
R-squared = 0.3736
GMM weight matrix: Robust Root MSE = .15659
----------------------------------------------------------------------------------
| Robust
tci2 | Coef. Std. Err. z P>|z| [95% Conf. Interval]
-----------------+----------------------------------------------------------------
lnprca | .6482297 .0423372 15.31 0.000 .5652503 .731209
hc1 | -.0611358 .0219196 -2.79 0.005 -.1040973 -.0181742
lnphycaprkna_emp | .1085501 .0235886 4.60 0.000 .0623172 .1547829
lnlabcyp005 | -.1711451 .0170801 -10.02 0.000 -.2046215 -.1376688
lnfdis05 | .0139148 .0062994 2.21 0.027 .0015682 .0262615
institution100 | .0027736 .0013024 2.13 0.033 .0002209 .0053263
_cons | -6.691095 .4246392 -15.76 0.000 -7.523373 -5.858818
----------------------------------------------------------------------------------
Instrumented: lnprca
Instruments: hc1 lnphycaprkna_emp lnlabcyp005 lnfdis05 institution100 L.lnprca
co2cap_pt co2gdp_pt
.
. 从回归结果来看,好像没有找到“Anderson-Rubin Wald检验”的结果呢?
谢谢,敬请指点啊!