Control | No | No | Yes | Yes |
省份固定效应 | Yes | No | Yes | No |
行业固定效应 | Yes | No | Yes | No |
个体固定效应 | No | Yes | No | Yes |
N | 6392 | 6392 | 6391 | 6391 |
R2 | 0.3363 | 0.8376 | 0.5026 | 0.8712 |