变量名称 | 绿色发明和实用新型专利 | ||||
(1) | (2) | (3) | (4) | ||
控制型文化 | 0.145*** |
|
|
| |
| (2.78) |
|
|
| |
竞争型文化 |
| 0.012 |
|
| |
|
| (1.09) |
|
| |
协作型文化 |
|
| −0.009*** |
| |
|
|
| (−3.73) |
| |
创造型文化 |
|
|
| 0.052*** | |
|
|
|
| (3.58) | |
公司规模 | 0.148*** | 0.147*** | 0.147*** | 0.147*** | |
| (7.57) | (7.54) | (7.53) | (7.55) | |
公司年龄 | 0.099*** | 0.100*** | 0.102*** | 0.098*** | |
| (3.12) | (3.15) | (3.20) | (3.09) | |
ROA | 0.017 | 0.017 | 0.017 | 0.017 | |
| (0.18) | (0.19) | (0.19) | (0.19) | |
杠杆 | 0.287*** | 0.287*** | 0.287*** | 0.287*** | |
| (4.71) | (4.71) | (4.71) | (4.72) | |
四大审计 | −0.081 | −0.080 | −0.079 | −0.080 | |
| (−1.03) | (−1.01) | (−1.01) | (−1.02) | |
分析师 | 0.030*** | 0.030*** | 0.030*** | 0.030*** | |
| (3.52) | (3.51) | (3.51) | (3.51) | |
常量 | −1.211*** | −1.226*** | −1.225*** | −1.206*** | |
| (−7.19) | (−7.22) | (−7.20) | (−7.19) | |
样本量 | 25,506 | 25,506 | 25,506 | 25,506 | |
Hausman Test | 350.90*** | 341.38*** | 343.61*** | 354.34*** | |
调整的R2 | 0.139 | 0.138 | 0.138 | 0.138 | |
年份效应 | YES | YES | YES | YES | |
行业效应 | YES | YES | YES | YES |