From: A birth population-based survey of preterm morbidity and mortality by gestational age
GA, weeks | 25–27 | 28–31 | 32–33 | 34–36 | 25–36 |
---|---|---|---|---|---|
Preterm births, n | 85 | 314 | 428 | 1824 | 2651 |
Prevalence, ‰1 | 1.4 | 5.3 | 7.2 | 30.8 | 44.7 |
Perinatal mortality, n | 49 | 83 | 32 | 60 | 224 |
R1, % | 57.6 | 26.4 | 7.5 | 3.3 | 8.4 |
R2, ‰ | 0.8 | 1.4 | 0.5 | 1.0 | 3.8 |
Fetal deaths / stillbirths, n | 31 | 49 | 20 | 37 | 137 |
R1, % | 36.5 | 15.6 | 4.7 | 2.0 | 5.2 |
R2, ‰ | 0.5 | 0.8 | 0.3 | 0.6 | 2.3 |
Deaths at DR, n | 12 | 11 | 2 | 2 | 27 |
R1, % | 14.1 | 3.5 | 0.5 | 0.1 | 1.0 |
R2, ‰ | 0.2 | 0.2 | 0.0 | 0.0 | 0.5 |
Neonatal mortality, n | 24 | 42 | 15 | 26 | 107 |
R1, %2 | 44.4 | 15.8 | 3.7 | 1.5 | 4.3 |
R2, ‰3 | 0.4 | 0.7 | 0.3 | 0.4 | 1.8 |
All deaths, n | 61 | 93 | 35 | 63 | 252 |
R1, % | 71.8 | 29.6 | 8.2 | 3.5 | 9.5 |
R2, ‰ | 1.0 | 1.6 | 0.6 | 1.1 | 4.3 |