Table 2 Gestational age-specific survival rates to 1 year adjusted age in Epochs 1 and 2.
Epoch 1 | Epoch 2 | |||
|---|---|---|---|---|
n | % survival (95% CI) | n | % survival (95% CI) | |
23 weeks | 36 | 11 (3, 26) | 53 | 25 (14, 38) |
24 weeks | 50 | 44 (30, 59) | 72 | 60 (47, 71) |
25 weeks | 63 | 68 (55, 79) | 57 | 70 (57, 82) |
26 weeks | 80 | 85 (75, 92) | 89 | 84 (75, 91) |
27 weeks | 81 | 86 (77, 93) | 85 | 94 (87, 98) |
23–27 weeks | 310 | 67 (61, 72) | 356 | 71 (65, 75) |