H-DIFF | 0.239 | 0.030 (0.34) | 0.048 (0.56) | 0.083 (1.22) | −0.003 (0.04) | 0.015 (0.22) |
K-DIFF | −1.088 | 0.007 (0.03) | −0.001 (0.01) | −0.507 | −0.253 (0.89) | −0.293 (1.04) |
SDI | 3.891 | 1.075 | 1.151 | 2.477 | 0.121 (0.28) | 0.178 (0.41) |
SUM | 6.997 | 4.803 | 4.820 | 5.365 | 1.778 | 1.760 |
DISTANCE | − | − | −1.416 | − | − | −1.453 |
Constant | −73.259 | −58.936 | −48.966 | −59.540 | −13.737 | −2.628 (0.33) |
Time-specific effects | No | No | No | Yes | Yes | Yes |
Country-specific effects | Fixed | Random | Random | Fixed | Random | Random |
Overall | 0.188 | 0.275 | 0.337 | 0.261 | 0.493 | 0.596 |
Within | 0.765 | 0.724 | 0.726 | 0.841 | 0.833 | 0.833 |
Between | 0.154 | 0.219 | 0.307 | 0.177 | 0.249 | 0.426 |
83.66 (0.000) | 77.25 (0.000) | |||||
LM test for country-specific effects ( | 732.41 (0.000) | 710.56 (0.000) | 1002.34 (0.000) | 1029.34 (0.000) | ||
Hausman test ( | 5600.25 (0.000) | 1110.73 (0.000) | 6.37 (0.999) | 10.94 (0.983) |
H-DIFF | 0.235 (0.87) | −0.033 (0.12) | −0.148 (0.59) | 0.308 (1.21) | 0.055 (0.24) | −0.027 (0.13) |
K-DIFF | −1.437 (1.37) | −3.946 | −4.923 | −1.084 (0.94) | −0.915 (0.96) | −1.731 |
SDI | −0.683 (0.33) | −0.619 (0.61) | −0.743 (0.96) | −1.104 (0.56) | −0.642 (0.70) | −0.512 (0.75) |
SUM | 7.185 | 3.975 | 2.879 | 7.308 | 1.817 | 1.554 |
DISTANCE | − | − | −2.720 | - | - | −2.140 |
Constant | −76.606 | −2.609 (0.16) | 43.076 | −82.267 | −7.431 (0.49) | 20.986 (1.41) |
Time-specific effects | No | No | No | Yes | Yes | Yes |
Country-specific effects | Fixed | Random | Random | Fixed | Random | Random |
Overall | 0.264 | 0.284 | 0.554 | 0.265 | 0.374 | 0.641 |
Within | 0.696 | 0.664 | 0.628 | 0.750 | 0.738 | 0.734 |
Between | 0.262 | 0.261 | 0.577 | 0.259 | 0.264 | 0.611 |
52.39 (0.000) | 51.42 (0.000) | |||||
LM test for country-specific effects ( | 252.63 (0.000) | 136.16 (0.000) | 350.36 (0.000) | 214.43 (0.000) | ||
Hausman test ( | 228.51 (0.000) | 87.88 (0.000) | 12.64 (0.396) | 17.28 (0.139) |
H-DIFF | 0.012 (0.17) | –0.024 (0.36) | –0.009 (0.14) | –0.029 (0.46) | –0.030 (0.46) | –0.018 (0.29) |
K-DIFF | 0.354 (1.17) | 0.405 | 0.425 | –0.646 | –0.542 (1.44) | –0.520 (1.40) |
SDI | 1.596 | 0.594 (1.23) | 0.688 (1.41) | –0.076 (0.09) | 0.469 (1.00) | 0.539 (1.14) |
SUM | 1.232 | 0.994 | 0.985 | –1.974 (1.39) | 0.556 (1.13) | 0.516 (1.03) |
DISTANCE | – | – | –1.205 | – | – | –1.115 |
Constant | –11.711 | –10.050 | –1.535 (0.26) | 45.004 | 6.925 (0.82) | 16.065 (1.62) |
Time-specific effects | No | No | No | Yes | Yes | Yes |
Country-specific effects | Fixed | Random | Random | Fixed | Random | Random |
Overall | 0.045 | 0.129 | 0.237 | 0.119 | 0.135 | 0.223 |
Within | 0.240 | 0.226 | 0.229 | 0.409 | 0.387 | 0.390 |
Between | 0.037 | 0.119 | 0.238 | 0.191 | 0.112 | 0.206 |
65.49 (0.000) | 74.82 (0.000) | |||||
LM test for country-specific effects ( | 367.39 (0.000) | 404.82 (0.000) | 398.08 (0.000) | 430.19 (0.000) | ||
Hausman test ( | 1.85 (0.763) | 3.29 (0.510) | 9.26 (0.814) | 8.48 (0.863) |
H-DIFF | Human capital per worker difference | 0.260 | 0.408 | 0.001 | 0.900 |
K-DIFF | Capital per worker difference | 20,0143.400 | 72,901.280 | 85,208.190 | 421,443.300 |
SDI | Helpman’s size dispersion index | 0.377 | 0.097 | 0.092 | 0.500 |
SUM | Sum of parent country and Poland’s GDPs | 1,543,024.000 | 979,411.400 | 439,640.900 | 4,678,112.000 |
DISTANCE | Geographic distance of each parent country’s capital city from Warsaw | 1292.267 | 609.981 | 515 | 2756 |
H-DIFF | 1 | –0.193 | –0.006 | 0.265 | 0.599 |
K-DIFF | 1 | –0.126 | 0.155 | –0.041 | |
SDI | 1 | –0.100 | 0.117 | ||
SUM | 1 | –0.085 | |||
DISTANCE | 1 |