Table A4. Robustness checks by... | Emerald Publishing

Table A4.

Robustness checks by controlling firm effect in an industry for international knowledge sourcing

DV: International	Model
knowledge sourcing	1	2	3	4
Industry dummy	Included	Included	Included	Included
Firm dummy	Included	Included	Included	Included
Korean knowledge stock	−0.054 (0.001)***	−0.054 (0.001)***	−0.053 (0.001)***	−0.053 (0.001)***
Knowledge stock of foreign-owned firms in South Korea	0.260 (0.010)***	0.266 (0.010)***	0.273 (0.010)***	0.273 (0.010)***
Export-intensity		0.010 (0.000)***		0.007 (0.001)***
Inward FDI			0.090 (0.004)***	0.064 (0.005)***
Chi²	6,719.19***	7,203.10***	7,234.63***	7,410.68***
Pseudo R²	0.8171	0.0884	0.0884	0.0889
Observations	472,303	472,303	472,303	472,303

DV: International	Model
knowledge sourcing	1	2	3	4
Industry dummy	Included	Included	Included	Included
Firm dummy	Included	Included	Included	Included
Korean knowledge stock	−0.054 (0.001)***	−0.054 (0.001)***	−0.053 (0.001)***	−0.053 (0.001)***
Knowledge stock of foreign-owned firms in South Korea	0.260 (0.010)***	0.266 (0.010)***	0.273 (0.010)***	0.273 (0.010)***
Export-intensity		0.010 (0.000)***		0.007 (0.001)***
Inward FDI			0.090 (0.004)***	0.064 (0.005)***
Chi²	6,719.19***	7,203.10***	7,234.63***	7,410.68***
Pseudo R²	0.8171	0.0884	0.0884	0.0889
Observations	472,303	472,303	472,303	472,303

Notes:

*p < 0.10; **p < 0.05; ***p < 0.01

Source: Table by author