Table 6. Air transport import amount analysis with FTA countries
| Variable | fe | re | ols |
| ln_GDP | -1.7931*** (0.393) | 0.7218*** (0.210) | 1.7295*** (0.058) |
| ln_PERGDP | 3.1847*** (0.404) | 0.6107*** (0.208) | -0.2137*** (0.052) |
| ln_KGDP | 10.4089*** (1.770) | 7.5733*** (1.753) | 5.9819** (2.826) |
| ln_KPERGDP | -10.3706*** (1.935) | -7.5428*** (1.927) | -6.0903* (3.134) |
| ln_area | (omitted) | -0.1655 (1.633) | -0.4424*** (0.035) |
| ln_airport | (omitted) | 1.0372*** (0.304) | 0.1880** (0.076) |
| ln_oilprice | -0.0086 (0.039) | -0.0011 (0.040) | 0.0037 (0.065) |
| _cons | -157.5253*** (28.426) | -147.2468*** (28.849) | -131.4759*** (46.969) |
| R2 | 0.5620.0880.029 | 0.5500.6950.660 | 0.7147 |
| Hausman p-value | 0.000 | |
| obs | 1,645 | 1,645 | 1,645 |
주1: fe는 고정효과모형, re는 확률효과모형, ols는 다중회귀모형.
주2: 는 각각 10%, 5%, 1% 유의수준에서 유의미한 결과임.
주3: R2는 within, between, overall 순서임.
주4: p-value < 0.01이면 H0 : cov(xi,t, ui) = 0을 기각하여 고정효과모형이 일치추정량임.