Variables | symbols | Descriptions |
Dependent Variable | IPATENT | The natural logarithm is taken after the number of patent applications for inventions of enterprises is added to 1 |
Independent Variables | SUB | 1 = Get Government Subsidies, 0 = No government subsidies |
GRO | Grouping variables of R&D tax super-deduction Policy | |
POL | 1 = Treatment group, 0 = Control group | |
Control Variables | ASSET | Logarithm of total assets of a company |
TAXR | Enterprise income tax rate | |
LEV | Asset-liability ratio | |
GROWTH | Income growth rate | |
AGE | Sample year minus year of establishment plus 1 | |
CASH | Net operating cash flow divided by final total assets |