Table 1 Demographic characteristics of infants stratified by severity of bronchopulmonary dysplasia (BPD).

From: Evolution and Determinants of Lung Function until Late Infancy among Infants Born Preterm

 

Total (n = 121)

No BPD (n = 61)

Mild-moderate BPD (n = 34)

Severe BPD (n = 26)

GA, wk

30 ± 3 (23–34)

32 ± 1 (28–34)

28 ± 2 (23–33)*

26 ± 1 (23–28)*#

Birth weight, g

1422 ± 513 (476–2504)

1844 ± 323 (1064–2504)

1183 ± 302 (630–2094)*

851 ± 218 (476–1290) *#

Boys

63 (52.1)

35 (60.3)

17 (50)

9 (34.6)

PROM

41 (33.9)

19 (32.7)

11 (32.3)

11 (42.3)

Prenatal steroid

71 (58.6)

25 (43.1)

28 (72.3)

22 (84.6)#

Surfactant

32 (26.4)

0 (0)

14 (41.1)*

15 (57.7)*

Duration of positive-pressure ventilation, d

39 ± 55 (0–420)

6 ± 1 (0–31)

43 ± 21 (18–90)*

114 ± 78 (55–420) *#

  1. *p < 0.001 compared with the no BPD group; # p < 0.001 compared with the mild to moderate BPD group.
  2. PROM, premature rupture of membrane.
  3. Values were presented as means and standard deviations (ranges) or numbers (proportions, %).
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