Predicted percentage survival to 28 days after birth by birth weight and gestational age for singleton births alive at the onset of care during the birthing process
| Gestation at birth (completed weeks) | ||||||||||
| 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
| Birth weight (g) | ||||||||||
| 2200–2299 | 98% | |||||||||
| 2100–2199 | 98% | |||||||||
| 2000–2099 | 97% | 98% | ||||||||
| 1900–1999 | 97% | 98% | ||||||||
| 1800–1899 | 97% | 98% | ||||||||
| 1700–1799 | 97% | 97% | 98% | |||||||
| 1600–1699 | 97% | 97% | 98% | |||||||
| 1500–1599 | 96% | 97% | 97% | 98% | ||||||
| 1400–1499 | 96% | 97% | 97% | 98% | ||||||
| 1300–1399 | 94% | 96% | 97% | 97% | 98% | |||||
| 1200–1299 | 94% | 96% | 97% | 97% | 97% | |||||
| 1100–1199 | 91% | 94% | 95% | 96% | 97% | 97% | ||||
| 1000–1099 | 90% | 93% | 95% | 96% | 97% | 97% | ||||
| 900–999 | 83% | 90% | 93% | 95% | 96% | 97% | ||||
| 800–899 | 70% | 82% | 89% | 92% | 94% | 96% | ||||
| 700–799 | 22% | 46% | 66% | 80% | 87% | 91% | 93% | |||
| 600–699 | 19% | 40% | 62% | 76% | 85% | 89% | ||||
| 500–599 | 14% | 33% | 53% | 69% | ||||||
| 400–499 | 8% | 21% | 39% | |||||||
| 300–399 | 3% | 8% | 17% | |||||||