| Neonatal | Postneonatal | Childhood |
---|---|---|---|
All available countries | 53.1 (52.7, 53.4) | 28.4 (28.1, 28.8) | 18.5 (18.2, 18.9) |
By income class | |||
 Low-income countries | 44.0 (43.5, 44.5) | 32.8 (32.3, 33.3) | 23.2 (22.7, 23.7) |
 Lower-middle-income countries | 57.2 (56.8, 57.6) | 26.1 (25.7, 26.5) | 16.7 (16.3, 17.1) |
 Upper-middle-income countries | 54.7 (53.8, 55.5) | 33.0 (32.2, 33.9) | 12.3 (11.6, 13.0) |