Table 4 Patient characteristics between BPD positive and BPD negative groups.

From: Clinical significance of Ureaplasma species in bronchopulmonary dysplasia development in preterm infants

Characteristic

BPD+ (n = 23)

BPD− (n = 334)

t/x2

P value

Gestational age (wk)

 28.7 ± 1.1

33.4 ± 2.2

16.9

0.001

Body weight (g)

 1234 ± 441

1958 ± 578

7.72

0.005

Sex (M/F)

 17/6

117/157

3.80

0.051

Apgar at 1 min

 6.8 ± 2.4

8.4 ± 1.9

1.83

0.176

Apgar at 5 min

 8.1 ± 1.5

9.3 ± 1.1

2.73

0.145

Caesarean section

 14 (60.8)

287 (85)

10.336

0.01

Oxygen day (day)

 37.85 ± 13.6

3.9 ± 5.8

34.8

0.001

Ventilator day (day)

 7.0 ± 11.1

0.2 ± 0.5

324.1

0.001

Hospital day (day)

 56.6 ± 13.1

17.3 ± 13.4

0.22

0.64

Antenatal steroid

 11 (47.8)

84 (25.1)

5.67

0.017

PROM

 11 (47.8)

62 (18.6)

11.32

0.001

UU

 3 (13)

9 (2.6)

7.09

0.008

  1. Values are presented as mean ± standard deviation or number (%). The asterisks symbol indicates significant differences *P ≤ 0.05, **P < 0.01, ***P < 0.001 and NS, not significant (P > 0.05) . PROM; premature rupture of membranes, UU; Ureaplasma urealyticum.
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