Table 1 Summary statistics of continuous variables
From: Country size bias in global health: cross-country comparison of malaria policy and foreign aid
| Variablea | Units | N | Mean | SD | Min | Max |
|---|---|---|---|---|---|---|
| Land area | log of km2 | 215 | 4.72 | 1.31 | 0.30 | 7.22 |
| Latitude of country centroid | absolute degree | 164 | 27.35 | 17.78 | 0.42 | 74.70 |
| Elevation above sea level | mean m | 164 | 626.92 | 560.98 | 9.17 | 3185.92 |
| Population size | log | 215 | 6.59 | 1.06 | 4.05 | 9.13 |
| Population density | log | 195 | 1.9 | 0.62 | 0.29 | 4.41 |
| Urban population | proportion | 215 | 0.6 | 0.24 | 0.12 | 1.00 |
| Population within 100 km of coast | proportion | 164 | 0.43 | 0.36 | 0.00 | 1.00 |
| GDP per capita PPP | log of US$ | 192 | 4.07 | 0.5 | 2.9 | 5.06 |
| Total GDP PPP | log of millions US$ | 192 | 10.79 | 1.04 | 7.62 | 13.28 |
| Total health expenditure per capita PPP | log of intl $ | 185 | 2.83 | 0.57 | 1.47 | 3.99 |
| Government health to total government expenditure | proportion | 186 | 3.56 | 2.34 | 0.37 | 13.06 |
| Official development assistance received per capita | current US$ | 139 | 124.24 | 318.11 | −2.34 | 3034.15 |
| Openness (Sachs&Warner) | – | 139 | 0.25 | 0.40 | 0.00 | 1.00 |
| International country risk guide index | – | 98 | 5.68 | 2.26 | 2.27 | 9.98 |
| HDI | – | 188 | 0.69 | 0.15 | 0.35 | 0.94 |
| Malaria incidence | log of 1000 population at risk | 105 | 0.92 | 1.41 | −1.30 | 2.66 |
| Malaria incidence | 1000 population at risk | 105 | 96.03 | 129.49 | 0.05 | 460.90 |
| Plasmodium vivax species | proportion | 105 | 0.27 | 0.37 | 0.00 | 1.00 |
| Global Fund funding for malaria control per capita | US$ | 90 | 0.88 | 1.82 | −0.07 | 14.85 |
| PMI USAID funding for malaria control per capita | US$ | 90 | 0.27 | 0.55 | 0.00 | 3.10 |
| World Bank funding for malaria control per capita | US$ | 91 | 0.01 | 0.03 | −0.01 | 0.20 |
| UK government funding for malaria control per capita | US$ | 90 | 0.04 | 0.20 | 0.00 | 1.29 |
| Government funding for malaria control per capita | US$ | 70 | 0.80 | 2.98 | 0.00 | 24.89 |
| UNICEF funding for malaria control per capita | US$ | 61 | 0.03 | 0.13 | 0.00 | 1.04 |
| Policy score 1 (from factor analysis) | – | 93 | 0.08 | 0.40 | −0.69 | 0.82 |
| Policy score 2 (from factor analysis) | – | 93 | 0.73 | 0.39 | −0.47 | 1.44 |
| Policy score 3 (from factor analysis) | – | 93 | −0.18 | 0.40 | −0.87 | 0.92 |
| Policy score 4 (from factor analysis) | – | 93 | 1.02 | 0.39 | −0.05 | 1.84 |