| Variables | Change year | ||||
| Whole sample | Good legal environment | Poor legal environment | Strong environmental regulations | Weak environmental regulations | |
| Treat | 0.1837*** | 0.1957*** | 0.1741*** | 0.1957*** | 0.1741*** |
| Post | 0.0051 | 0.0119 | −0.0172 | 0.0119 | −0.0172 |
| DID | 0.0081 | 0.0165 | −0.0105 | 0.0165 | −0.0105 |
| Switch | −0.0512*** | −0.0693*** | −0.0360*** | −0.0693*** | −0.0360*** |
| Opinion | 0.1151*** | 0.1000** | 0.1273*** | 0.1000** | 0.1273*** |
| Big4 | 0.5532*** | 0.5617*** | 0.5467*** | 0.5617*** | 0.5467*** |
| SOE | −0.1007*** | −0.0875*** | −0.1079*** | −0.0875*** | −0.1079*** |
| Loss | 0.0210 | −0.0109 | 0.0504** | −0.0109 | 0.0504** |
| Size | 0.3344*** | 0.3495*** | 0.3158*** | 0.3495*** | 0.3158*** |
| Lev | −0.1224*** | −0.1736*** | −0.0713* | −0.1736*** | −0.0713* |
| MB | −0.4293*** | −0.4664*** | −0.3789*** | −0.4664*** | −0.3789*** |
| Quick | −0.0062*** | −0.0122*** | −0.0023 | −0.0122*** | −0.0023 |
| ROA | −0.6975*** | −0.7866*** | −0.5800*** | −0.7866*** | −0.5800*** |
| Sub | 0.0711*** | 0.0629*** | 0.0790*** | 0.0629*** | 0.0790*** |
| _cons | 5.7713*** | 5.5372*** | 6.0763*** | 5.5372*** | 6.0763*** |
| N | 8404 | 3704 | 4700 | 3704 | 4700 |
| adj. R-sq | 0.645 | 0.630 | 0.649 | 0.630 | 0.649 |