| 样本 | 均值 | 标准偏误(%) | 标准偏误绝对值减少(%) | 显著性检验 | ||
|
| 处理组 | 控制组 |
|
| T值 | P值 |
lnage | 匹配前 | 2.913 | 2.869 | 14.0% | 90.9% | 19.37 | 0.000 |
| 匹配后 | 2.913 | 2.909 | 1.3% |
| 1.29 | 0.196 |
lnsize | 匹配前 | 10.829 | 10.438 | 33.2% | 99.4% | 42.48 | 0.000 |
| 匹配后 | 10.829 | 10.831 | −0.2% |
| −0.19 | 0.847 |
lnemp | 匹配前 | 5.245 | 5.140 | 12.0% | 91.5% | 16.23 | 0.000 |
| 匹配后 | 5.245 | 5.254 | −1.0% |
| −1.06 | 0.288 |
lnoutput | 匹配前 | 11.246 | 11.193 | 4.8% | 69.0% | 6.59 | 0.000 |
| 匹配后 | 11.246 | 11.263 | −1.5% |
| −1.50 | 0.133 |
lnprofit | 匹配前 | 8.138 | 7.848 | 15.9% | 99.9% | 21.95 | 0.000 |
| 匹配后 | 8.138 | 8.137 | 0.0% |
| 0.01 | 0.991 |
lndebt | 匹配前 | 9.920 | 9.422 | 33.4% | 98.2% | 42.74 | 0.000 |
| 匹配后 | 9.920 | 9.929 | −0.6% |
| −0.66 | 0.512 |
lnowner | 匹配前 | 10.026 | 9.568 | 34.1% | 98.5% | 43.88 | 0.000 |
| 匹配后 | 10.026 | 10.033 | −0.5% |
| −0.55 | 0.584 |