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)*** | ||
| 6,719.19*** | 7,203.10*** | 7,234.63*** | 7,410.68*** | |
| Pseudo | 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
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