Table 7. Regression results by sectors.
| Patent number (Total) | Firm number with patent (Extensive margin) | Innovation intensity (Intensive margin) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturing | Service | High-tech service | Other service | Manufacturing | Service | High-tech service | Other service | Manufacturing | Service | High-tech service | Other service | |
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) | (11) | (12) | |
| HSR | 0.460*** | 0.621*** | 0.621*** | 0.499*** | 0.324*** | 0.428*** | 0.434*** | 0.326*** | 0.203*** | 0.117** | 0.0292 | 0.198*** |
| (0.0467) | (0.0520) | (0.0517) | (0.0488) | (0.0298) | (0.0342) | (0.0349) | (0.0304) | (0.0387) | (0.0468) | (0.0736) | (0.0623) | |
| Controls | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | - | - | - | - |
| County/firm fixed effects | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Province-Year fixed effects | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Number of counties/firms | 1,972 | 1,972 | 1,972 | 1,972 | 1,972 | 1,972 | 1,972 | 1,972 | 79,837 | 86,074 | 59,739 | 26,335 |
| R2 | 0.843 | 0.786 | 0.772 | 0.747 | 0.867 | 0.827 | 0.818 | 0.781 | 0.465 | 0.408 | 0.414 | 0.369 |
| Observation | 25,636 | 25,636 | 25,636 | 25,636 | 25,636 | 25,636 | 25,636 | 25,636 | 803,561 | 651,232 | 428,833 | 222,399 |
Notes: *, **, *** refers to the statistical significance at 10%, 5%, and 1%, respectively. The standard errors are reported in parentheses and clustered at county and firm levels. The high-tech service industry consists of the information technology industry and scientific research and technology service industry.