| Type of Variable | Name of Variable | Symbol of Variable | Description of Variable |
| Explained variable | Loan-loss reserve rate | RISKDL | loan-loss reserve/total loan |
| Explanatory variable | Internet finance Index | IFI | Internet finance Index |
| Control Variable | Macroeconomic level | GDP | Nominal GDP growth × 100 |
| Bank capital adequacy | CAR | Bank capital/weighted risk assets | |
| Return on bank assets | ROA | Net margin/total asset | |
| Banking concentration | CR4 | The ratio of assets of the top 4 Banks | |
| Bank loan-to-deposit ratio | DPR | Total loan/total deposit | |
| Asset Size | SIZE | Log total asset |