变量 | (1) | (2) | (3) |
缩尾处理 | 改变样本区间 | 剔除直辖市 | |
数字经济 | −0.9994*** | −1.6018*** | −1.0918*** |
| (0.3292) | (0.3656) | (0.3626) |
数字经济平方项 | 0.7184** | 1.1402*** | 0.7738** |
| (0.3214) | (0.3235) | (0.3161) |
经济发展水平 | −0.0120* | −0.0009 | −0.0194** |
| (0.0065) | (0.0067) | (0.0088) |
科技水平 | 0.0245** | 0.0333*** | 0.0349*** |
| (0.0098) | (0.0122) | (0.0113) |
人力资本水平 | −0.1332*** | −0.1336*** | −0.1163*** |
| (0.0245) | (0.0257) | (0.0282) |
对外开放程度 | −0.0013** | −0.0002** | −0.0002** |
| (0.0006) | (0.0001) | (0.0001) |
_cons | 0.7385*** | 0.7124*** | 0.7159*** |
| (0.0392) | (0.0418) | (0.0405) |
时间/区域固定效应 | yes | yes | yes |
样本量 | 232 | 203 | 200 |