变量符号 | 处理组 |
| 对照组 | ||||||||
观测数 | 均值 | 标准差 | 最小值 | 最大值 |
| 观测数 | 均值 | 标准差 | 最小值 | 最大值 | |
RD | 3392 | 0.0262 | 0.0184 | 0.000048 | 0.201 | 9072 | 0.0224 | 0.021 | 0.000002 | 0.273 | |
timetreat | 3392 | 0.625 | 0.484 | 0 | 1 | 9072 | 0 | 0 | 0 | 0 | |
ROA | 3392 | 5.327 | 7.029 | −69.95 | 57.21 | 9072 | 4.856 | 7.61 | −113.8 | 119.3 | |
lnassets | 3392 | 21.97 | 1.34 | 17.99 | 27.39 | 9072 | 21.96 | 1.265 | 18.27 | 28.25 | |
debttoassets | 3392 | 37.79 | 19.44 | 0.752 | 104.4 | 9072 | 40.51 | 21.01 | 1.103 | 239.4 | |
OCF | 3392 | 8.851 | 13.8 | −116 | 83.24 | 9072 | 8.195 | 34.43 | −1423 | 1139 | |
ca | 3392 | 0.0563 | 0.0485 | 0 | 0.388 | 9072 | 0.112 | 1.228 | 0 | 58.6 | |
grow | 3392 | 0.229 | 1.559 | −0.862 | 84.99 | 9072 | 0.262 | 2.426 | −0.882 | 167.6 | |
age | 3392 | 18.48 | 6.291 | 4 | 48 | 9072 | 17.35 | 5.174 | 1 | 64 | |
soe | 3392 | 0.323 | 0.468 | 0 | 1 | 9072 | 0.347 | 0.476 | 0 | 1 | |
indnum | 3392 | 0.0743 | 0.0166 | 0.00594 | 0.213 | 9072 | 0.0726 | 0.0386 | 0.00594 | 0.352 | |
lnGDP | 3392 | 10.56 | 0.624 | 9.211 | 11.49 | 9072 | 10.36 | 0.758 | 6.407 | 14.6 | |