变量

发达国家

发展中国家

lnY_it

0.012^***

0.023^***

(7.15)

(9.01)

lnT_t

−23.410^***

−29.146^***

(−5.36)

(−6.62)

lnY_ct

0.002

(1.39)

lnD_i

−0.041^*

−0.011^*

(−1.98)

(−1.70)

FTA_i

79.249

116.781

(0.66)

(1.62)

Contig_i

322.553

(0.86)

lnEX_t

−64.969^**

−43.269^**

(−3.17)

(−1.99)

lnP_ct

6.397

(0.04)

Constant

664.636

489.292^***

(0.31)

(2.98)

Observation

143

176

Number of groups

13

16

R-squared

0.854

0.605