Table 4. Air transport export amount analysis

Variable fe re ht
ln_GDP -4.431***(0.790) 0.879***(0.225) -2.691***(0.658)
ln_PERGDP 5.526***(0.744) 0.398*(0.239) 3.908***(0.624)
ln_KGDP 10.102***(2.563) 7.692***(2.607) 9.195***(2.540)
ln_KPERGDP -10.175***(2.816) -7.926***(2.883) -9.361***(2.795)
ln_oilprice -0.088(0.060) -0.084(0.061) -0.087(0.059)
ln_exchanges -0.042(0.055) -0.007(0.050) -0.041(0.054)
ln_area (omitted) 0.133(0.149) 1.695***(0.648)
ln_airport (omitted) -0.079(0.250) 2.310**(1.045)
_cons -106.626**(42.362) -150.523***(43.310) -140.253***(42.232)
R2 0.4590.6180.275 0.4220.8380.670
Hausman p-value 0.000
obs 747 747 747
주1: fe는 고정효과모형, re는 확률효과모형, ht는 하우스만 테일러모형.
주2: *, **, *** 는 각각 10%, 5%, 1% 유의수준에서 유의미한 결과임.
주3: R2은 within, between, overall 순서임.
주4: p-value<0.01이면 H0 : cov(xi,t, ui) = 0을 기각하여 고정효과모형이 일치추정량임.