Explanatory Variables

Equation (6)

Equation (8)

Constant

2.56 (2.15)^*

2.83 (2.09)^*

Lni

0.39 (2.86)^**

0.16 (2.11)^*

Lnh

1.37 (3.29)^***

0.46 (2.92)^**

Lng

2.28 (3.61)^***

1.78 (3.01)^***

Lnx

−1.25 (−2.13)^*

−3.45 (−2.89)^**

Lnp

−4.73 (−2.65)^**

−4.89 (−3.42)^***

Lnc

NA

−1.3 (−1.51)

R-square

0.61

0.68

Adjusted R-square

0.57

0.63

Durbin-Watson

0.481

0.538