Table 7. Air transport import amount analysis with non-FTA countries
| Variable | fe | re | ols |
| ln_GDP | 0.6385*** (0.217) | 1.0030*** (0.111) | 1.2359*** (0.036) |
| ln_PERGDP | -0.1106 (0.230) | -0.3715*** (0.122) | -0.2874*** (0.044) |
| ln_KGDP | 4.9549*** (1.789) | 3.8300** (1.736) | 1.6494 (2.598) |
| ln_KPERGDP | -4.4530** (1.957) | -3.4230* (1.913) | -1.4396 (2.880) |
| ln_area | (omitted) | -0.2767*** (0.085) | -0.3481*** (0.025) |
| ln_airport | (omitted) | 0.8961*** (0.232) | 0.5138*** (0.065) |
| ln_oilprice | -0.0435 (0.038) | -0.0422 (0.038) | -0.0512 (0.058) |
| _cons | -101.0319*** (29.138) | -84.0500*** (28.797) | -48.4163 (43.227) |
| R2 | 0.2430.5020.427 | 0.2420.5730.491 | 0.5048 |
| Hausman p-value | 0.001 | |
| obs | 3,308 | 3,308 | 3,308 |
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.