| (1) | (2) | (3) | (4) | (5) | (6) | |
|---|---|---|---|---|---|---|
| 缩尾 | 改变样本数量 | low-carbon | smart | new-energy | 剔除预期效应 | |
| DID | 0.051*** | 0.045*** | 0.081*** | 0.120*** | 0.066*** | 0.031* |
| (0.016) | (0.017) | (0.019) | (0.020) | (0.018) | (0.018) | |
| _cons | 0.705 | 0.743 | 0.208 | -0.311 | 0.662 | -1.599*** |
| (0.476) | (0.491) | (0.441) | (0.444) | (0.432) | (0.052) | |
| 控制变量 | YES | YES | YES | YES | YES | YES |
| 个体固定 | YES | YES | YES | YES | YES | YES |
| 年份固定 | YES | YES | YES | YES | YES | YES |
| N/条 | 4201 | 3937 | 3316 | 2785 | 3969 | 3664 |
| adj. R2 | 0.794 | 0.794 | 0.786 | 0.817 | 0.786 | 0.792 |
