Definitions of variables
| Variable name | Description | Source |
| DAHpc | Development assistance for health per capita in 2015 US$ | IHME |
| POP | Total population size in recipient country | WB |
| GDPpc | Gross domestic product per capita in current US$ | WB |
| DALYR | Burden of disease measured as disability-adjusted life years (rate) | IHME |
| U5MR | Mortality rate, under-5 (per 1000 live births) | WB |
| MMR | Maternal mortality ratio (modelled estimate, per 1 00 000 live births) | WB |
| DTP3 | Immunisation, diphtheria, tetanus and pertussis (% of children aged 12–23 months who received vaccination)48 | IHME |
| TFR | Total fertility rate (children per woman) | UN |
IHME, Institute for Health Metrics and Evaluations; UN, United Nations; WB, World Bank.