Research Article

A Novel Approach towards Assessing the Impact of Air Quality and Major Public Health Emergencies on Light Industry: A Multiscale Investigation towards Improving the Risk Prevention System

Table 1

Setting and definition of all variables in the DID model.

VariablesVariable definition

Enterprise performance: to measure the operating condition of the enterprise, reflecting its profitability, asset operation level, solvency and subsequent development ability, etc.
AgeYears of enterprise operation.
LaborTotal number of employees in the enterprise at the end of the year.
CapitalTotal fixed assets: reflects the enterprise’s investment in fixed assets, the production scale and equipment level, etc.
ITRInventory turnover ratio: the ratio of an enterprise’s operating costs to its average inventory balance. A comprehensive indicator used to measure a company’s input production, inventory management level, and sales recovery ability.
ROADebt ratio: a comprehensive indicator of the company’s level of indebtedness.
AssetTotal assets: all assets owned or controlled by the company.
DTLCombined leverage: the role played by operating and financial leverage together. Used to measure the extent to which changes in sales volume affect changes in earnings per common share.
NatureNature of ownership: state-owned , nonstate-owned .
ScaleEnterprise scale: large-scale , other .
OverseasOverseas income: whether the enterprise has overseas business income in the current year. , .
IndustryIndustry nature: industry dummy variable.