| Symbol | Description of the variable |
| HE | Per capita real health expenditure (US $, PPP) |
| GDP | Per capita real GDP (US $, PPP) |
| POP65 | % population aged 65 and over |
| POP14 | % population aged 0 - 14 |
| ABED | Number of acute-care beds per 1000 population |
| FLABOUR | % female labour from female population aged 15 - 64 |
| POPD | Number of people per sq. km |
| PUBE | Public health expenditure as % of total health expenditure |
| UNEMPLOY | % unemployment in labour force |
| DCOVER | Dummy variable for health coverage |
| TIME | Time variable |