Robustness test
| (1) | (2) | (3) | (4) | |
|---|---|---|---|---|
| Variable | ||||
| Panel A – Using alternative model specification A | ||||
| 0.141*** | 0.144*** | |||
| (3.088) | (3.147) | |||
| 0.169*** | 0.173*** | |||
| (3.861) | (3.934) | |||
| Constant | −11.002*** | −10.982*** | −10.898*** | −10.877*** |
| (−45.525) | (−45.455) | (−44.058) | (−43.986) | |
| Included | Yes | Yes | Yes | Yes |
| Year FE | Yes | Yes | Yes | Yes |
| Industry FE | Yes | Yes | Yes | Yes |
| Province FE | No | No | Yes | Yes |
| Obs | 25,594 | 25,594 | 25,594 | 25,594 |
| R-squared | 0.723 | 0.723 | 0.728 | 0.729 |
| Panel B – Using alternative model specification B | ||||
| 0.214*** | 0.219*** | |||
| (4.701) | (4.823) | |||
| 0.242*** | 0.247*** | |||
| (5.553) | (5.690) | |||
| Constant | −10.989*** | −10.954*** | −10.885*** | −10.850*** |
| (−45.465) | (−45.333) | (−44.005) | (−43.880) | |
| Included | Yes | Yes | Yes | Yes |
| Year FE | Yes | Yes | Yes | Yes |
| Industry FE | Yes | Yes | Yes | Yes |
| Province FE | No | No | Yes | Yes |
| Obs | 25,594 | 25,594 | 25,594 | 25,594 |
| R-squared | 0.723 | 0.724 | 0.729 | 0.729 |
| Panel C – Controlling for firm fixed effect | ||||
| 0.193*** | 0.195*** | |||
| (4.334) | (4.394) | |||
| 0.207*** | 0.209*** | |||
| (4.840) | (4.897) | |||
| Constant | −11.173*** | −11.149*** | −11.115*** | −11.092*** |
| (−26.630) | (−26.581) | (−25.801) | (−25.744) | |
| Included | Yes | Yes | Yes | Yes |
| Year FE | Yes | Yes | Yes | Yes |
| Industry FE | Yes | Yes | Yes | Yes |
| Province FE | No | No | Yes | Yes |
| Firm FE | Yes | Yes | Yes | Yes |
| Obs | 29,578 | 29,578 | 29,578 | 29,578 |
| R-squared | 0.657 | 0.657 | 0.584 | 0.585 |
| (1) | (2) | (3) | (4) | |
|---|---|---|---|---|
| Variable | ||||
| Constant | −11.002*** | −10.982*** | −10.898*** | −10.877*** |
| (−45.525) | (−45.455) | (−44.058) | (−43.986) | |
| Yes | Yes | Yes | Yes | |
| Year FE | Yes | Yes | Yes | Yes |
| Industry FE | Yes | Yes | Yes | Yes |
| Province FE | No | No | Yes | Yes |
| Obs | 25,594 | 25,594 | 25,594 | 25,594 |
| 0.723 | 0.723 | 0.728 | 0.729 | |
| Constant | −10.989*** | −10.954*** | −10.885*** | −10.850*** |
| (−45.465) | (−45.333) | (−44.005) | (−43.880) | |
| | Yes | Yes | Yes | Yes |
| Year FE | Yes | Yes | Yes | Yes |
| Industry FE | Yes | Yes | Yes | Yes |
| Province FE | No | No | Yes | Yes |
| Obs | 25,594 | 25,594 | 25,594 | 25,594 |
| 0.723 | 0.724 | 0.729 | 0.729 | |
| Constant | −11.173*** | −11.149*** | −11.115*** | −11.092*** |
| (−26.630) | (−26.581) | (−25.801) | (−25.744) | |
| Yes | Yes | Yes | Yes | |
| Year FE | Yes | Yes | Yes | Yes |
| Industry FE | Yes | Yes | Yes | Yes |
| Province FE | No | No | Yes | Yes |
| Firm FE | Yes | Yes | Yes | Yes |
| Obs | 29,578 | 29,578 | 29,578 | 29,578 |
| 0.657 | 0.657 | 0.584 | 0.585 | |
| Panel D – Controlling for stock turnover | ||||
|---|---|---|---|---|
| Model | (1) | (2) | (3) | (4) |
| OLS | OLS | OLS | OLS | |
| Variable | ||||
| 0.228*** | 0.231*** | |||
| (5.618) | (5.681) | |||
| 0.255*** | 0.258*** | |||
| (6.562) | (6.633) | |||
| 0.002*** | 0.002*** | 0.002*** | 0.002*** | |
| (27.833) | (27.841) | (27.745) | (27.752) | |
| Constant | −11.752*** | −11.714*** | −11.687*** | −11.649*** |
| (−62.509) | (−62.329) | (−61.046) | (−60.881) | |
| Included | Yes | Yes | Yes | Yes |
| Year FE | Yes | Yes | Yes | Yes |
| Industry FE | Yes | Yes | Yes | Yes |
| Province FE | No | No | Yes | Yes |
| Obs | 29,578 | 29,578 | 29,578 | 29,578 |
| R-squared | 0.755 | 0.756 | 0.759 | 0.760 |
| Panel D – Controlling for stock turnover | ||||
|---|---|---|---|---|
| Model | (1) | (2) | (3) | (4) |
| OLS | OLS | OLS | OLS | |
| Variable | ||||
| 0.002*** | 0.002*** | 0.002*** | 0.002*** | |
| (27.833) | (27.841) | (27.745) | (27.752) | |
| Constant | −11.752*** | −11.714*** | −11.687*** | −11.649*** |
| (−62.509) | (−62.329) | (−61.046) | (−60.881) | |
| Yes | Yes | Yes | Yes | |
| Year FE | Yes | Yes | Yes | Yes |
| Industry FE | Yes | Yes | Yes | Yes |
| Province FE | No | No | Yes | Yes |
| Obs | 29,578 | 29,578 | 29,578 | 29,578 |
| 0.755 | 0.756 | 0.759 | 0.760 | |
Note(s): All continuous variables are winsorized at the 1st and 99th percentile. T values are reported in parentheses under coefficients. *, **, and *** indicate significance at the 10%, 5%, and 1% levels, respectively. Variable definitions are presented in Appendix A