变量名称 | (1) | (2) | (3) |
CCR | Patent | CCR | |
patent |
|
| 0.055*** |
|
|
| (6.19) |
policy | 0.305*** | 0.351*** | 0.286*** |
| (9.75) | (4.99) | (9.16) |
soe | 0.301*** | 1.173*** | 0.237*** |
| (9.33) | (16.22) | (7.04) |
export | 0.002** | 0.009*** | 0.001 |
| (1.98) | (5.16) | (1.35) |
lev | −0.009*** | −0.003* | −0.009*** |
| (−11.21) | (−1.83) | (−11.06) |
roe | 0.015*** | −0.008*** | 0.015*** |
| (18.61) | (−4.67) | (19.24) |
GDP growth | 0.002 | −0.047*** | 0.005*** |
| (1.29) | (−11.07) | (2.60) |
environment | 0.034* | −0.180*** | 0.044** |
| (1.88) | (−4.40) | (2.43) |
Constant | 2.867*** | 2.174*** | 2.748*** |
| (57.01) | (19.28) | (51.38) |
Observations | 2519 | 2519 | 2519 |
Adjusted R-squared | 0.208 | 0.177 | 0.219 |
Sobel检验 | 0.019*** (z = 3.89) | ||
Goodman检验1 | 0.019*** (z = 3.86) | ||
Goodman检验2 | 0.019*** (z = 3.92) | ||
中介效应系数 | 0.019*** (z = 3.89) | ||
直接效应系数 | 0.286*** (z = 9.16) | ||
总效应系数 | 0.305*** (z = 9.75) | ||
中介效应比例 | 0.067 |