变量 | 混合效应 | 随机效应 | 固定效应 |
OLS | RE | FE | |
lnDEIit | 0.315*** | −0.250* | −0.364* |
| (3.73) | (−1.72) | (−1.98) |
lnGDPit | 0.564*** | 0.846*** | 1.161*** |
| (13.92) | (10.22) | (7.08) |
lnGDPjt | 0.183 | 0.596*** | 0.465** |
| (1.20) | (3.99) | (2.04) |
lnDISij | −0.451*** | −0.522*** | 0.000 |
| (−15.08) | (−5.76) | (0) |
lnPOPit | 0.839*** | 0.960*** | 2.027** |
| (36.04) | (16.01) | (2.17) |
SEA | 0.536*** | 0.371 | 0.000 |
| (4.69) | (1.05) | (0) |
cons | 5.912*** | −2.672 | −26.275* |
| (3.35) | (−1.11) | (−1.76) |
N | 120 | 120 | 120 |
r2 | 0.968 | 0.534 | 0.551 |