| Explanatory variables | Dependent variable: IG_HIIT | |||
| FEM | REM | |||
| (1) | (2) | (3) | (4) | |
| SIZE | 0.012 | 0.012 | 0.012 | 0.012 |
| (4.95) | (4.99) | (4.97) | (5.00) | |
| DIFRD | −2.102 | −2.226 | −1.969 | −2.028 |
| (−0.82) | (−0.85) | (−0.78) | (−0.80) | |
| DIFYP | −3.437 | −3.433 | −3.515 | −3.542 |
| (−1.79) | (−1.78) | (−1.79) | (−1.78) | |
| DIFY | −0.191 | −0.19 | −0.189 | −0.187 |
| (−4.87) | (−4.76) | (−4.79) | (−4.65) | |
| DIST | −0.014 | −0.014 | −0.014 | −0.014 |
| (−5.05) | (−5.07) | (−4.97) | (−4.95) | |
| Constant | −3.575 | −3.525 | −3.672 | −3.623 |
| (−24.9) | (−29.71) | (−14.35) | (−14.29) | |
| Yearly dummies |
| Yes |
| Yes |
| Number of observations | 1305 | 1305 | 1305 | 1305 |
| Overall R2 | 0.118 | 0.118 | 0.118 | 0.118 |
| R2 for between estimator | 0.052 | 0.054 | 0.054 | 0.056 |
| R2 for within estimator | 0.128 | 0.127 | 0.128 | 0.127 |