Table 4 Rates of major neurodevelopmental impairment* detectable at 1 year adjusted age in Epochs 1 and 2.
Epoch 1 | Epoch 2 | |||
|---|---|---|---|---|
# seen/# survivors (%) | % impaired (95% CI) | # seen/# survivors (%) | % impaired (95% CI) | |
23 weeks | 4/4 (100) | 0 (0, 60) | 11/13 (85) | 73 (39, 94) |
24 weeks | 22/22 (100) | 41 (21, 64) | 39/43 (91) | 26 (13, 42) |
25 weeks | 41/43 (95) | 15 (6, 29) | 36/40 (90) | 6 (1, 19) |
26 weeks | 63/68 (93) | 22 (13, 34) | 63/75 (85) | 11 (5, 22) |
27 weeks | 57/70 (80) | 16 (7, 28) | 65/80 (81) | 6 (2, 15) |
23–27 weeks | 187/207 (90) | 20 (15, 27) | 214/251 (85) | 14 (10, 20) |