变量名称 |
| 处理组均值 | 对照组均值 | 标准差 | T值 | P值 |
GDP growth | 匹配前 | 9.378 | 9.519 | −1.7 | −0.43 | 0.665 |
| 匹配后 | 9.377 | 9.057 | 3.9 | 0.99 | 0.320 |
soe | 匹配前 | 0.438 | 0.406 | 6.4 | 1.59 | 0.112 |
| 匹配后 | 0.437 | 0.454 | −3.4 | −0.89 | 0.373 |
export | 匹配前 | 11.474 | 14.161 | −13.9 | −3.49 | 0.000 |
| 匹配后 | 11.506 | 10.362 | 5.9 | 1.77 | 0.077 |
leverage | 匹配前 | 45.694 | 43.572 | 10.0 | 2.49 | 0.013 |
| 匹配后 | 45.661 | 45.684 | −0.1 | 0.03 | 0.977 |
roe | 匹配前 | 8.545 | 9.789 | −6.7 | −1.67 | 0.095 |
| 匹配后 | 8.604 | 8.372 | 1.2 | 0.33 | 0.739 |
patent | 匹配前 | 2.060 | 1.995 | 3.6 | 0.90 | 0.366 |
| 匹配后 | 2.056 | 2.115 | −3.3 | −0.86 | 0.390 |
environment | 匹配前 | 1.352 | 1.141 | 26.0 | 6.42 | 0.000 |
| 匹配后 | 1.344 | 1.304 | 4.9 | 1.25 | 0.211 |