| Variables | Signification | Measure |
| TFP | Total Factors Productivity | TFP level knowing that the United States is worth 1 (Penn World Table Base) |
| LFDI | Foreign Direct Investment | Logarithm of incoming FDI flows (Base WDI), transformed by the formula:
(In order to make them strictly positive) |
| QTI | Quality of Transport Infrastructures | Synthetic Index of the African Infrastructure Development Index (AIDI) |
| SIZ | Market size | Average income per capita (WDI basis) |
| ICT | ICT use | Percentage of people subscribed to mobile telephony (WDI base) |
| OPE | Opening of the economy | Measured by the report (X + I)/GDP |
| CAP | Capital structure | Measured by the ratio of physical capital stock to GDP |
| NRES | Natural resources | Share of natural resources in GDP (WDI basis) |
| HC | Human capital | Average number of years of study (Penn World Table) |
| RPR | Respect of property rights | WGI synthetic index |
| FD | Financial development | Credit volume as a percentage of GDP based on WDI |
| GRO | Rate of growth | GDP growth rate (WDI basis) |
| INF | Rate of inflation | Rate of inflation ( WDI basis) |
| INV | Rate of investissement | Gross fixed capital formation as a percentage of GDP (WDI basis) |