Incidence of exchange transfusions, per 10 000 live births, among all neonates aged 24 months or less
| WHO region | N | Live births | Incidence* | 95% CI |
| Overall† | 16 | 9 437 479 | 8.4 | 2.7 to 25.7 |
| African | 1 | 5256 | 186.5 | 153.2 to 226.8 |
| Americas | 6 | 5 181 411 | 0.38 | 0.21 to 0.67 |
| Eastern Mediterranean | 1 | 1690 | 17.8 | 5.7 to 54.9 |
| European | 6 | 3 209 806 | 0.35 | 0.20 to 0.60 |
| Southeast Asian | 1 | 145 623 | 107.1 | 102.0 to 112.5 |
| Western Pacific | 1 | 893 693 | 0.19 | 0.12 to 0.31 |
*Test for subgroup differences (Cochran’s Q=1501.2, p<0.001).
†I2=99%, Cochran’s Q=8730.7, p<0.001.
N, no of studies.