Intra-industry trade in vertically differentiated products intra-industry trade in horizontally differentiated products
Coefficient (t-Student) Coefficient (t-Student)
TSDt-1 -0.488**
( -0.877)
-0.511*
( -0.844)
INV 0.423**
(0.277)
0.394***
(0.158)
DS 0.113
(0.71)
0.299**
(2.94)
FSH -0.039***
(-1.01)
0.111
(0.87)
FSV 8.519**
(1.28)
4.957***
(2.86)
TER -4.333**
(-1.228)
-5.23**
(-3.08)
OC 0.003**
(0.124)
0.109**
(0.87)
GDP 9.125
(2.87)
6.357*
(2.57)
Constant -19.663**
( -2.48)
-48.258***
( -5.17)
Hansen test of validity of
instruments
chi2(198)  =   0.00
p-value =  1.000
chi2(198)  =   0.00
p-value =  1.000
 Sargan test of validity of
instruments
chi2(198)  = 144.96
p-value =  0.481
chi2(198)  = 151.22
p-value =  0.574
Arellano-Bond test for AR (1) in first differences  

z =  -2.12
p-value =  0.035

z =  -2.65
p-value =  0.041
Arellano-Bond test for AR (2) in first differences z =   0.67
p-value=  0.516
z =   0.71
p-value=  0.509
Table 3: Estimation results by the system GMM method, Dependent variable: Intraindustry trade in differentiated products, Number of observations: 200, Number of sectors: 8