2.3. Ước lượng mô hình GMM 2 bước với biến phụ thuộc là lnfelabor (3)
= | 420 | |
Group variable: indcode_2 Number of groups Time variable: year Obs per group: min | = = | 84 5 |
avg | = | 5 |
max | = | 5 |
Number of instruments = 39 Wald chi2(21) | = | 652.40 |
Prob > chi2 | = | 0.0000 |
Two-step results (Std. Err. adjusted for clustering | on | indcode_2) |
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Coef. | WC-Robust Std. Err. | z | P>|z| | [95% Conf. | Interval] | |
lnfemale | ||||||
L1. | .3451178 | .0767426 | 4.50 | 0.000 | .194705 | .4955306 |
L2. | .0548087 | .1100275 | 0.50 | 0.618 | -.1608412 | .2704587 |
lnW | ||||||
--. | -.0616277 | .0274545 | -2.24 | 0.025 | -.1154375 | -.0078179 |
L1. | .0264919 | .0221284 | 1.20 | 0.231 | -.0168789 | .0698627 |
lnVa | ||||||
--. | .2808768 | .054845 | 5.12 | 0.000 | .1733826 | .388371 |
L1. | -.0783675 | .0444791 | -1.76 | 0.078 | -.1655448 | .0088099 |
L2. | .004322 | .0361528 | 0.12 | 0.905 | -.0665361 | .0751802 |
lnw_s | ||||||
--. | 1.316855 | .8868541 | 1.48 | 0.138 | -.4213468 | 3.055057 |
L1. | -.7866189 | .6284602 | -1.25 | 0.211 | -2.018378 | .4451404 |
L2. | -.550258 | .405252 | -1.36 | 0.175 | -1.344537 | .2440213 |
LnEX | ||||||
--. | -.0063637 | .0051245 | -1.24 | 0.214 | -.0164074 | .0036801 |
L1. | .0567199 | .0206175 | 2.75 | 0.006 | .0163104 | .0971294 |
L2. | -.05038 | .0256206 | -1.97 | 0.049 | -.1005954 | -.0001645 |
LnIM | ||||||
--. | .0012133 | .0098941 | 0.12 | 0.902 | -.0181788 | .0206054 |
L1. | -.0199919 | .0099636 | -2.01 | 0.045 | -.0395201 | -.0004637 |
L2. | .0620013 | .0213104 | 2.91 | 0.004 | .0202337 | .103769 |
year4 | .0135329 | .0184256 | 0.73 | 0.463 | -.0225807 | .0496464 |
year5 | .0671425 | .0259648 | 2.59 | 0.010 | .0162524 | .1180326 |
year6 | .0014944 | .0386353 | 0.04 | 0.969 | -.0742293 | .0772181 |
year7 | .0663481 | .0492458 | 1.35 | 0.178 | -.0301719 | .1628681 |
year8 | .037973 | .055051 | 0.69 | 0.490 | -.069925 | .145871 |
Instruments for differenced equation GMM-type: L(2/.).lnfemale
Standard: D.lnW LD.lnW D.lnVa LD.lnVa L2D.lnVa D.lnw_s LD.lnw_s L2D.lnw_s D.LnEX LD.LnEX L2D.LnEX D.LnIM LD.LnIM L2D.LnIM D.year4 D.year5 D.year6 D.year7 D.year8
3.1 Ước lượng GMM biến phụ thuộc là LnShare
estimation | Number of obs | = | 384 | |
Group variable: indcode_2 | Number of groups | = | 81 | |
Time variable: year | ||||
Obs per group: | ||||
min | = | 2 | ||
avg | = | 4.740741 | ||
max | = | 5 |
Number of instruments = 36 Wald chi2(18) = 163.04
Prob > chi2 = 0.0000
One-step results
Coef. | Std. Err. | z | P>|z| | [95% Conf. | Interval] | |
lnShare | ||||||
L1. | .1041697 | .0809758 | 1.29 | 0.198 | -.0545399 | .2628793 |
L2. | .1212934 | .0546506 | 2.22 | 0.026 | .0141801 | .2284067 |
lnwlh | ||||||
--. | .0861297 | .1045327 | 0.82 | 0.410 | -.1187507 | .29101 |
L1. | -.0249623 | .1022812 | -0.24 | 0.807 | -.2254296 | .1755051 |
lnVa | ||||||
--. | -.0323976 | .048226 | -0.67 | 0.502 | -.1269189 | .0621237 |
L1. | -.0310444 | .0472341 | -0.66 | 0.511 | -.1236216 | .0615328 |
L2. | .005932 | .0486595 | 0.12 | 0.903 | -.0894388 | .1013029 |
LnEX | ||||||
--. | -.0167894 | .0295765 | -0.57 | 0.570 | -.0747582 | .0411795 |
L1. | .0425946 | .0710665 | 0.60 | 0.549 | -.0966931 | .1818823 |
L2. | .088487 | .0683083 | 1.30 | 0.195 | -.0453947 | .2223688 |
LnIM | ||||||
--. | .0610086 | .0429169 | 1.42 | 0.155 | -.0231069 | .1451241 |
L1. | -.0194685 | .0546766 | -0.36 | 0.722 | -.1266327 | .0876957 |
L2. | .0146184 | .0799641 | 0.18 | 0.855 | -.1421084 | .1713452 |
year4 | -.1099377 | .0462711 | -2.38 | 0.018 | -.2006274 | -.0192481 |
year5 | -.3174826 | .0619717 | -5.12 | 0.000 | -.4389449 | -.1960202 |
year6 | -.3158879 | .0860717 | -3.67 | 0.000 | -.4845854 | -.1471904 |
year7 | -.3016661 | .1016471 | -2.97 | 0.003 | -.5008907 | -.1024416 |
year8 | -.267446 | .1110318 | -2.41 | 0.016 | -.4850643 | -.0498277 |
Instruments for differenced equation GMM-type: L(2/.).lnShare
Standard: D.lnwlh LD.lnwlh D.lnVa LD.lnVa L2D.lnVa D.LnEX LD.LnEX L2D.LnEX D.LnIM LD.LnIM L2D.LnIM D.year4 D.year5 D.year6 D.year7 D.year8
3.2 Ước lượng GMM biến phụ thuộc là LnShare, sử dụng phương sai mạnh
= | 384 | |
Group variable: indcode_2 Number of groups Time variable: year Obs per group: min | = = | 81 2 |
avg | = | 4.740741 |
max | = | 5 |
Number of instruments = 36 Wald chi2(18) | = | 142.45 |
Prob > chi2 | = | 0.0000 |
One-step results (Std. Err. adjusted for clustering | on | indcode_2) |
Coef. | Robust Std. Err. | z | P>|z| | [95% Conf. | Interval] | |
lnShare | ||||||
L1. | .1041697 | .1070515 | 0.97 | 0.331 | -.1056473 | .3139868 |
L2. | .1212934 | .0483555 | 2.51 | 0.012 | .0265183 | .2160685 |
lnwlh | ||||||
--. | .0861297 | .1200219 | 0.72 | 0.473 | -.149109 | .3213683 |
L1. | -.0249623 | .0935194 | -0.27 | 0.790 | -.2082569 | .1583324 |
lnVa | ||||||
--. | -.0323976 | .0430025 | -0.75 | 0.451 | -.1166809 | .0518857 |
L1. | -.0310444 | .045445 | -0.68 | 0.495 | -.120115 | .0580262 |
L2. | .005932 | .0670862 | 0.09 | 0.930 | -.1255546 | .1374186 |
LnEX | ||||||
--. | -.0167894 | .0120491 | -1.39 | 0.163 | -.0404052 | .0068264 |
L1. | .0425946 | .066414 | 0.64 | 0.521 | -.0875744 | .1727636 |
L2. | .088487 | .0521013 | 1.70 | 0.089 | -.0136297 | .1906038 |
LnIM | ||||||
--. | .0610086 | .0359823 | 1.70 | 0.090 | -.0095154 | .1315325 |
L1. | -.0194685 | .0417948 | -0.47 | 0.641 | -.1013849 | .0624479 |
L2. | .0146184 | .0572718 | 0.26 | 0.799 | -.0976322 | .1268689 |
year4 | -.1099377 | .0421861 | -2.61 | 0.009 | -.192621 | -.0272545 |
year5 | -.3174826 | .0744077 | -4.27 | 0.000 | -.463319 | -.1716461 |
year6 | -.3158879 | .0894912 | -3.53 | 0.000 | -.4912873 | -.1404884 |
year7 | -.3016661 | .1159516 | -2.60 | 0.009 | -.528927 | -.0744052 |
year8 | -.267446 | .1229186 | -2.18 | 0.030 | -.508362 | -.02653 |
Instruments for differenced equation GMM-type: L(2/.).lnShare
Standard: D.lnwlh LD.lnwlh D.lnVa LD.lnVa L2D.lnVa D.LnEX LD.LnEX L2D.LnEX D.LnIM LD.LnIM L2D.LnIM D.year4 D.year5 D.year6 D.year7 D.year8
3.3 Ước lượng GMM 2 bước biến phụ thuộc là LnShare
= | 384 | |
Group variable: indcode_2 Number of groups Time variable: year Obs per group: min | = = | 81 2 |
avg | = | 4.740741 |
max | = | 5 |
Number of instruments = 36 Wald chi2(18) | = | 113.10 |
Prob > chi2 | = | 0.0000 |
Two-step results (Std. Err. adjusted for clustering | on | indcode_2) |
Coef. | WC-Robust Std. Err. | z | P>|z| | [95% Conf. | Interval] | |
lnShare | ||||||
L1. | .0304072 | .1573392 | 0.19 | 0.847 | -.2779719 | .3387863 |
L2. | .0645148 | .051094 | 1.26 | 0.207 | -.0356275 | .1646572 |
lnwlh | ||||||
--. | .0835878 | .1440994 | 0.58 | 0.562 | -.1988418 | .3660174 |
L1. | .0080571 | .09596 | 0.08 | 0.933 | -.180021 | .1961352 |
lnVa | ||||||
--. | -.0335881 | .0439002 | -0.77 | 0.444 | -.1196309 | .0524548 |
L1. | -.0724435 | .047909 | -1.51 | 0.131 | -.1663434 | .0214565 |
L2. | -.0084681 | .0739436 | -0.11 | 0.909 | -.1533948 | .1364587 |
LnEX | ||||||
--. | -.0097198 | .0098053 | -0.99 | 0.322 | -.0289379 | .0094983 |
L1. | -.0076233 | .0535679 | -0.14 | 0.887 | -.1126144 | .0973678 |
L2. | .0415417 | .0409681 | 1.01 | 0.311 | -.0387542 | .1218376 |
LnIM | ||||||
--. | .045663 | .0367655 | 1.24 | 0.214 | -.026396 | .117722 |
L1. | .0283295 | .0403914 | 0.70 | 0.483 | -.0508362 | .1074952 |
L2. | .0544629 | .0467601 | 1.16 | 0.244 | -.0371851 | .1461109 |
year4 | -.1337692 | .0420448 | -3.18 | 0.001 | -.2161755 | -.0513629 |
year5 | -.3265182 | .0763932 | -4.27 | 0.000 | -.4762461 | -.1767903 |
year6 | -.3804038 | .1042729 | -3.65 | 0.000 | -.584775 | -.1760326 |
year7 | -.3405774 | .1334856 | -2.55 | 0.011 | -.6022045 | -.0789504 |
year8 | -.3051872 | .1398614 | -2.18 | 0.029 | -.5793105 | -.0310638 |
Instruments for differenced equation GMM-type: L(2/.).lnShare
Standard: D.lnwlh LD.lnwlh D.lnVa LD.lnVa L2D.lnVa D.LnEX LD.LnEX L2D.LnEX D.LnIM LD.LnIM L2D.LnIM D.year4 D.year5 D.year6 D.year7 D.year8