Table 1 Definition of variables.

From: The effect of enterprise digital transformation on supply chain efficiency and its transmission mechanism

Variable type

Variable name

Variable symbol

Variable definition

Explanatory variable

Digital transformation

Digital

Ln (Frequency of Words Related to Digital Transformation + 1)

Explained variable

Inventory turnover

SCE

Ln [365/(Operating Costs/Average Inventory Balance)]

Control variables

Size

Size

Ln (Total Asset)

Asset-Liability Ratio

Leverage

Total Liabilities to Total Assets

Profitability

ROA

Net Income to Total Assets

Capital Expenditure

Capex

(Cash paid for fixed assets, Intangible Asset and Other Long-Term Assets)/Total Assets

Equity

Concentration

Equity Top1

Top One Shareholder Ratio

Cash flows from Operating Activities

Cash

Net Cash Flows from Operating Activities/Operating Income

Growth Capability

Growth

Revenue Growth Rate

Nature of Property

SOE

Value 1 if the Enterprise is a State-Owned Enterprise and 0 Otherwise

Gross Margin

Margin

(Operating income—operating costs)/Operating income

Supplier Concentration

Supplier Top5

Top Five Suppliers Purchase Ratio

Mediating variables

Management Capabilities

Management Fee

Management Expense Ratio

External Transaction Costs

Transaction Cost

Sales Expense Ratio

Moderating variable

Customer Concentration

Customer Top5

Top Five Customers Sales Ratio