Table III. Stochastic frontier... | Emerald Publishing

Table III.

Stochastic frontier estimation

Variable	Coef.	t-stat
Constant	7.872^***	216.10
NACE 220	−0.137^***	−4.30
NACE 1011	−0.584^***	−28.04
NACE 1013	−0.512^***	−17.53
NACE 1051	−0.462^***	−22.44
NACE 1089	−1.132^***	−14.62
NACE 1102	−0.499^***	−5.64
NACE 1103	−0.107^***	−2.57
NACE 1610	−0.331^***	−8.60
NACE 4120	−0.272^***	−6.38
NACE 4622	−0.572^***	−11.41
NACE 4631	−0.682^***	−26.25
NACE 4632	−0.674^***	−19.25
NACE 4639	−0.395^***	−12.55
NACE 4673	−0.154^***	−5.78
NACE 4722	−0.816^***	−28.30
Labor	0.299^***	45.52
Capital	0.040^***	13.61
Materials	0.695^***	79.03
1/2 Labor²	0.079^*	1.84
Labor × Capital	0.047^***	3.51
Labor × Materials	−0.059^***	−4.19
1/2 Capital²	0.033	1.28
Capital × Materials	−0.095^***	−4.71
1/2 Materials²	0.107^***	9.45
Central	−0.044^*	−1.70
Coast	−0.061^***	−3.64
Electronic commerce	0.052^**	2.38
Organic	0.762^***	9.83
Quality certification	0.148^***	6.61
D₂₀₀₇	−0.041^***	−3.27
D₂₀₀₈	−0.010	−0.58
D₂₀₀₉	−0.009	−0.47
D_Agr × subsidy	0.194^**	1.99
D_For × subsidy	0.001	0.01

Log likelihood	230.579

Variable	Coef.	t-stat
Constant	7.872^***	216.10
NACE 220	−0.137^***	−4.30
NACE 1011	−0.584^***	−28.04
NACE 1013	−0.512^***	−17.53
NACE 1051	−0.462^***	−22.44
NACE 1089	−1.132^***	−14.62
NACE 1102	−0.499^***	−5.64
NACE 1103	−0.107^***	−2.57
NACE 1610	−0.331^***	−8.60
NACE 4120	−0.272^***	−6.38
NACE 4622	−0.572^***	−11.41
NACE 4631	−0.682^***	−26.25
NACE 4632	−0.674^***	−19.25
NACE 4639	−0.395^***	−12.55
NACE 4673	−0.154^***	−5.78
NACE 4722	−0.816^***	−28.30
Labor	0.299^***	45.52
Capital	0.040^***	13.61
Materials	0.695^***	79.03
1/2 Labor²	0.079^*	1.84
Labor × Capital	0.047^***	3.51
Labor × Materials	−0.059^***	−4.19
1/2 Capital²	0.033	1.28
Capital × Materials	−0.095^***	−4.71
1/2 Materials²	0.107^***	9.45
Central	−0.044^*	−1.70
Coast	−0.061^***	−3.64
Electronic commerce	0.052^**	2.38
Organic	0.762^***	9.83
Quality certification	0.148^***	6.61
D₂₀₀₇	−0.041^***	−3.27
D₂₀₀₈	−0.010	−0.58
D₂₀₀₉	−0.009	−0.47
D_Agr × subsidy	0.194^**	1.99
D_For × subsidy	0.001	0.01

Log likelihood	230.579

Notes:

*

Significant at 10%,

**

significant at 5%,

***

significant at 1%

Source: Own elaboration