变量名称 | 绿色发明和实用新型专利 | |||
(1) | (2) | (3) | (4) | |
控制型文化 | 0.104*** |
|
|
|
| (2.60) |
|
|
|
竞争型文化 |
| −0.006 |
|
|
|
| (−0.87) |
|
|
协作型文化 |
|
| −0.017** |
|
|
|
| (−1.97) |
|
创造型文化 |
|
|
| 0.072*** |
|
|
|
| (3.62) |
公司规模 | 0.403*** | 0.403*** | 0.403*** | 0.403*** |
| (36.53) | (36.54) | (36.55) | (36.56) |
公司年龄 | −0.056*** | −0.053*** | −0.054*** | −0.057*** |
| (−5.85) | (−5.55) | (−5.72) | (−6.00) |
ROA | −0.742*** | −0.738*** | −0.741*** | −0.743*** |
| (−7.54) | (−7.51) | (−7.54) | (−7.55) |
杠杆率 | 0.712*** | 0.711*** | 0.712*** | 0.712*** |
| (22.08) | (22.06) | (22.07) | (22.08) |
四大审计 | 0.228*** | 0.227*** | 0.228*** | 0.228*** |
| (6.25) | (6.22) | (6.25) | (6.27) |
分析师 | 0.063*** | 0.063*** | 0.063*** | 0.063*** |
| (8.60) | (8.58) | (8.59) | (8.62) |
企业产权 | 0.146*** | 0.145*** | 0.146*** | 0.147*** |
| (10.24) | (10.17) | (10.21) | (10.26) |
常量 | −4.009*** | −4.005*** | −3.998*** | −4.011*** |
| (−43.38) | (−43.22) | (−43.18) | (−43.40) |
样本量 | 25,506 | 25,506 | 25,506 | 25,506 |
调整的R2 | 0.254 | 0.254 | 0.254 | 0.254 |
年份效应 | YES | YES | YES | YES |
行业效应 | YES | YES | YES | YES |