| 被解释变量:专利数量(t + 1) | 被解释变量:专利质量(t + 1) | ||
| 竞争程度高 | 竞争程度低 | 竞争程度高 | 竞争程度低 |
变量 | (1) | (2) | (3) | (4) |
企业社会责任 | 2.652*** | −0.0236 | 0.154*** | 0.0367 |
| (7.162) | (−0.0440) | (3.286) | (0.626) |
董事会规模 | 0.0810*** | 0.0404 | 0.000690 | 0.00194 |
| (3.130) | (1.257) | (0.231) | (0.591) |
杠杆水平 | 1.796*** | 1.159*** | 0.0628* | 0.0239 |
| (7.498) | (3.325) | (1.947) | (0.590) |
企业年龄 | 0.305** | −0.0811 | 0.0489*** | 0.0517*** |
| (2.280) | (−0.453) | (2.960) | (2.680) |
企业规模 | 0.139*** | 0.241*** | −0.00443 | 0.0196*** |
| (3.451) | (5.785) | (−0.954) | (3.579) |
研发投入强度 | 0.127*** | 0.145*** | 0.00329 | 0.00211 |
| (5.750) | (4.725) | (1.436) | (0.541) |
盈利水平 | 9.678*** | 10.54*** | 0.543*** | 0.424** |
| (9.698) | (5.973) | (4.443) | (2.202) |
产权性质 | 0.145* | 0.232 | 0.000628 | 0.00309 |
| (1.853) | (1.607) | (0.0640) | (0.171) |