Research Article
Innovation Efficiency of High-Tech SMEs Listed in China: Its Measurement and Antecedents
Table 1
Brief description of input and output variables.
| Index | Variable | Interpretation of indicators |
| Input index | R&D personnel | The number of technical personnel of enterprise per year | R&D expenditure | The enterprise’s annual total expenditure on R&D activities | Fixed assets | The enterprise’s annual total fixed assets | Output index | Patent application | The number of patent application of enterprise per year | Main business income | The enterprise’s annual main business income |
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