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Table 2 Survive and morbidity rate according to GA for infants <32 weeks from 2013 to 2014

From: Neonatal mortality and morbidity among infants between 24 to 31 complete weeks: a multicenter survey in China from 2013 to 2014

Gestational age

24 weeks

25 weeks

26 weeks

27 weeks

28 weeks

29 weeks

30 week

31 week

Total

Numbers (%)

11

25

33

79

199

321

444

648

1760

Died within 7 days (%)

6 (54.5)

13 (52.0)

3 (9.1)

8 (10.1)

7 (3.5)

9 (2.8)

6 (1.4)

2 (0.3)

54 (3.1)

Died before discharge (%)

5 (45.5)

5 (20.0)

2 (6.1)

5 (6.3)

18 (9.1)

21 (6.5)

21 (4.7)

24 (3.7)

101 (5.7)

Survived to discharge (%)a

0 (0)

7 (28.0)

28 (84.8)

66 (83.5)

174 (87.4)

291 (90.7)

417 (93.9)

622 (96.0)

1605 (91.2)

Survived without morbidity (%)b

0 (0)

2 (8.0)

20 (60.6)

42 (53.2)

124 (62.3)

218 (67.9)

351 (79.1)

556 (85.8)

1313 (74.6)

Died or survived with at least one morbidity (%)

11 (100)

23 (92.0)

13 (39.4)

37 (46.8)

75 (37.7)

103 (32.1)

93 (20.9)

92 (14.2)

447 (25.4)

RDS (%)

10 (90.9)

22 (88.0)

29 (87.9)

69 (87.3)

167 (83.9)

223 (69.5)

234 (52.7)

276 (42.6)

1030 (58.5)

BPD (%)c

-

4 (57.1)

11 (39.3)

20 (30.3)

45 (25.9)

63 (21.6)

33 (7.9)

24 (3.9)

200 (12.5)

NEC (%)d

-

0 (0)

2 (6.7)

7 (9.9)

13 (6.8)

11 (3.5)

10 (2.3)

23 (3.6)

66 (3.9)

IVH (%)d

-

5 (41.7)

7 (23.3)

23 (32.4)

31 (16.1)

50 (16.0)

61 (13.9)

85 (13.2)

262 (15.4)

PDA (%)d

-

4 (33.3)

11 (36.7)

30 (42.3)

59 (30.7)

102 (32.7)

117 (26.7)

162 (25.1)

485 (28.4)

ROP (%)c

-

2 (28.6)

5 (17.9)

10 (15.2)

18 (10.3)

21 (7.2)

16 (3.8)

14 (2.3)

86 (5.4)

Sepsis (%)a

-

5 (20.0)

7 (21.2)

11 (13.9)

33 (16.6)

35 (10.9)

42 (9.5)

37 (5.7)

170 (9.7)

  1. RDS respiratory distress syndrome, BPD bronchopulmonary dysplasia, including mild, moderate and severe BPD, NEC necrotizing enterocolitis, including stage I, II and III, IVH intraventricular hemorrhage, including grade I, II, III and IV, ROP retinopathy of prematurity; including stage I, II, III, IV and V. PDA Patent ductus arteriosus
  2. a Proportion among all infants including survivors
  3. bMorbidity including moderate to severe BPD, severe IVH, high grade NEC, sepsis and ROP stage ≥3
  4. cProportion among infants who survived
  5. dProportion among infants who survived > 7 days