| Variable | Name of variable | Code | Definition of variable | Data source |
| Explained variable | International Consumer Center Potential Index | PICC | As measured | - |
| Explanatory variables | Service industry scale (%) | SER | Share of value added of service industry | As measured |
| Technological innovation level (piece) | PAT | The Number of Granted Patents | Local statistics | |
| Government expenditure level (100 million yuan) | GOV | General public budget expenditure | Local statistics | |
| Synergy of service and technological innovation | SER*PAT | Interaction between service industry scale and technological innovation | As measured | |
| Control variables | Urbanization Level (%) | URB | Urbanization rate of permanent resident population | Local statistics |
| City openness (US $100 million) | TRA | Total imports and exports of goods | Local statistics | |
| Infrastructure construction level (ten thousand households) | INF | Number of fixed Internet broadband access users | EPS database | |
| Population status (people/km2) | POP | Density of Population | EPS database |