Table 3.
The survival rate of extremely preterm (EP) infants in relation to gestational age and birth weight
| GA (weeks) | BW (grams) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| <24 | 24~ | 25~ | 26~ | 27~ | <600 | 600~ | 700~ | 800~ | 900~ | ≥1000 | |
| All EP infants, n | 26 | 105 | 263 | 548 | 1109 | 52 | 106 | 255 | 398 | 495 | 745 |
| Survived, n (%) | 3 (11.5) | 36 (34.3) | 89 (33.8) | 256 (46.7) | 692 (62.4) | 12 (23.1) | 32 (30.2) | 86 (33.7) | 186 (46.7) | 282 (57.0) | 478 (64.2) |
| Died despite active treatment, n (%) | 8 (30.8) | 23 (21.9) | 56 (21.3) | 90 (16.4) | 144 (13.0) | 11 (21.2) | 33 (31.1) | 41 (16.1) | 66 (16.6) | 74 (14.9) | 96 (12.9) |
| Died after medical care withdrawal, n (%) | 15 (57.7) | 46 (43.8) | 118 (44.9) | 202 (36.9) | 273 (24.6) | 29 (55.8) | 41 (38.7) | 128 (50.2) | 146 (36.7) | 139 (28.1) | 171 (23.0) |
R × 2 Chi-square test (linear-by-linear association) showed that the survival rate of EP infants improved with increasing GA and BW (both P<0.001). EP extremely preterm, GA gestational age, BW birth weight