Table 5 Robustness test.
Variable | (1) | (2) | (3) | (4) | (5) | (6) |
|---|---|---|---|---|---|---|
GTPG | EGTP | EGTP | EGTP | EGTP | EGTP | |
θ0 | 0.0451* (0.0245) | 0.0025** (0.0006) | 0.0007** (0.0003) | 0.0016*** (0.0003) | 0.0028*** (0.0002) | 0.1413* (0.0807) |
DML model | RF | RF | GBDT | RR | SVM | NN |
Control | Yes | Yes | Yes | Yes | Yes | Yes |
Control2 | Yes | Yes | Yes | Yes | Yes | Yes |
Firms/Year FE | Yes | Yes | Yes | Yes | Yes | Yes |
N | 22,407 | 22,407 | 22,407 | 22,407 | 22,407 | 22,407 |