Table 1 Patient characteristics between UU positive and UU negative groups.

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

Characteristic

UU+ (n = 12)

UU− (n = 345)

× 2

P value

M

6 (50)

188 (54.5)

0.094

0.759

F

6 (50)

157 (45.5)

Gestational age (wk)

 30.5 ± 2.2

33.2 ± 2.4

T = 2.82

0.001

Body weight (g)

 1529 ± 501

1934 ± 601

T = 4.85

0.005

Apgar at 1 min

 7.8 ± 1.7

8.5 ± 1.9

T = 1.45

0.148

Apgar at 5 min

 8.7 ± 1.3

9.3 ± 1.2

T = 2.24

0.060

Oxygen day (day)

 11.2 ± 12.5

5.4 ± 9.9

Z = 2.5

0.013

Hospital day (day)

 23.1 ± 19.1

19.2 ± 16.1

T = 0.974

0.33

Antenatal steroid

 9 (75)

86 (24.9)

15.09

0.001

PROM

 9 (75)

64 (19)

22.72

0.001

PIH

 12 (100)

124 (35.9)

20.17

0.001

  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) . UU+, Ureaplasma urealyticum-positive; UU–, Ureaplasma urealyticum-negative; PROM, premature rupture of membranes; PIH, pregnancy induced hypertension.
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