变量名称 | 绿色发明申请 | |||
(1) | (2) | (3) | (4) | |
控制型文化 | 0.112** |
|
|
|
| (2.45) |
|
|
|
竞争型文化 |
| −0.010 |
|
|
|
| (−1.04) |
|
|
协作型文化 |
|
| −0.007*** |
|
|
|
| (3.62) |
|
创造型文化 |
|
|
| 0.025*** |
|
|
|
| (3.85) |
公司规模 | 0.127*** | 0.126*** | 0.126*** | 0.126*** |
| (7.53) | (7.50) | (7.50) | (7.51) |
公司年龄 | 0.054* | 0.055* | 0.056** | 0.055* |
| (1.91) | (1.94) | (1.98) | (1.92) |
ROA | −0.024 | −0.023 | −0.023 | −0.023 |
| (−0.31) | (−0.30) | (−0.31) | (−0.31) |
杠杆水平 | 0.242*** | 0.242*** | 0.242*** | 0.242*** |
| (4.59) | (4.58) | (4.58) | (4.59) |
四大审计 | −0.067 | −0.067 | −0.066 | −0.067 |
| (−0.89) | (−0.88) | (−0.87) | (−0.88) |
分析师 | 0.027*** | 0.027*** | 0.027*** | 0.027*** |
| (3.70) | (3.69) | (3.69) | (3.70) |
常量 | −1.092*** | −1.103*** | −1.103*** | −1.092*** |
| (−7.42) | (−7.43) | (−7.40) | (−7.46) |
样本数 | 25,506 | 25,506 | 25,506 | 25,506 |
Hausman Test | 316.86*** | 306.39*** | 308.15*** | 316.02*** |
调整的R2 | 0.115 | 0.115 | 0.115 | 0.115 |
年份效应 | YES | YES | YES | YES |