Research Article

Impact of Investment Openness on National External Wealth: Based on Valuation Effects Perspective

Table 4

Regression results of the instrumental variables.

Stage 1Stage 2Stage 1Stage 2
FOnfaFOnfa

KOFecgldj0.2966∗ (1.82)FO−0.3542 (−1.78)KOFingldj0.9376 (2.77)FO−0.1938 (−1.68)
L-FO0.8604 (21.61)L-FO0.3041∗ (1.75)L-FO0.8034 (17.77)L-FO0.1652 (1.64)
z−0.0592 (−1.43)z−0.0010 (−0.05)z0.0099 (0.21)z0.0076 (0.53)
gdp0.0372 (0.85)gdp0.0207 (0.98)gdp−0.0515 (−0.85)gdp0.0072 (0.49)
TR−0.4068 (−1.97)TR0.0500 (0.50)TR−0.1972 (−0.96)TR0.1034 (1.39)
L2-TR0.4335 (2.19)L-TR−0.0014 (−0.01)L-TR0.3492 (1.79)L-TR−0.0663 (−0.85)
_cons−1.2167 (−1.77)_cons0.0287∗ (1.70)_cons−3.9318 (-2.75)_cons0.0241 (1.70)
Obs180Obs180Obs180Obs180
Sections10Sections10Sections10Sections10
Control periodYESControl periodYESControl periodYESControl periodYES
Control areaYESControl areaYESControl areaYESControl areaYES

Note. T-values are in parentheses. denotes statistical significance at 1%, denotes statistical significance at 5%, and denotes statistical significance at 10%. In addition, the newest data of variable KOFecgldj and KOFingldj indicator published by Gygli et al. [33] is disclosed only until the end of 2017. So the time period of all variables used for the robustness tests (4) and (5) is 2000–2017.