| 替换核心解释变量 | 缩短研究样本年限 | ||||
|---|---|---|---|---|---|
| (1) | (2) | (1) | (2) | ||
| x(L1x) | 0.582*** (0.017) | 0.511*** (0.023) | 0.491*** (0.016) | 0.441*** (0.021) | |
| c1 | 0.016* (0.009) | 0.013 (0.009) | |||
| c2 | -0.015 (0.010) | -0.007 (0.009) | |||
| c3 | 0.007*** (0.002) | 0.005*** (0.002) | |||
| c4 | 0.050*** (0.016) | 0.047*** (0.018) | |||
| _cons | 22.269*** (0.320) | 17.599*** (1.351) | 22.460*** (0.314) | 18.410*** (1.350) | |
| N | 270.000 | 270.000 | 240.000 | 240.000 | |
| r2 | 0.823 | 0.841 | 0.810 | 0.824 | |
