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Variable name | Code | Measurement methods | References |
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Enterprise value | EV | Tobin’s Q (the ratio of a company’s market value to the replacement value of its assets) | McConaughy et al. [41] & Liang et al. [42] |
Relational embeddedness | RE | The number of top management’s part-time enterprises | Zhang et al. [43] and Qu &Yu [44] |
Resource integration capability | RIC | Enterprise intangible assets ratio | Song and Yu [29] |
Market environmental dynamics | MED | The ratio of the standard deviation of abnormal profit and loss in 2011–2015 to the average operating income of the enterprise in the past five years | Boyd [45] & Chen et al. [38] |
Technology environmental dynamics | TED | The ratio between the standard deviation of R&D investment in 2011–2015 and the average operating income of the enterprise in the past five years | Zhang et al. [43] and Qu & Song and Yu [29] & Chen et al. [38] |
Enterprise size | Size | Logarithm of enterprise’s total assets at the end of the period |
Leverage | LEV | The ratio between total liabilities and total assets of an enterprise |
Financial leverage | FL | The ratio between the change rate of earnings per share of common stock and the change rate of profit before interest and tax |
Ownership concentration | OC | Shareholding ratio of the top three shareholders |
Equity balance degree | EBD | The ratio of the sum of the shareholding ratio of the second to the tenth largest shareholders and the shareholding ratio of the first largest shareholder |
Capital density | CD | Ratio of net fixed assets to total assets at the end of the year |
Preperformance level | PROA | Ratio of operating profit to total assets |
Effective tax rate | ETR | Ratio of enterprise income tax expense to profit before interest and tax |
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