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Table 1 Means (95% Confidence Interval) of the Demographic Data and Clinical Characteristics of Preterm Infants Participating this Study

From: Serratia marcescens colonization in preterm neonates during their neonatal intensive care unit stay

Characteristics

Mean (95% CI) or n (%)

Colonizated by Serratia marcescens

Not colonizated by Serratia marcescens

TOTAL

Infant

18 (69%)

8 (31%)

26 (100%)

Gestational age (wk)

27.8 (26.6;28.9)

27.4 (24.6;30.2)

27.7 (26.6;28.7)

Gender

   

 Male

6 (33%)

7 (87%)

13 (50%)

 Female

12 (67%)

1 (13%)

13 (50%)

Birth weight (g)

1100.56 (927;1274.1)

1317.5 (804.5;1830.5)

1167 (987.3;1347.3)

Delivery mode

   

 Vaginal

6 (33%)

6 (75%)

12 (46%)

 Cesarean section

12 (67%)

2 (25%)

14 (54%)

Antibiotherapy (days)

   

 No

1 (6%)

1 (13%)

2 (8%)

 Yes

17 (94%)

7 (87%)

24 (92%)

  <3 days

8 (44%)

3 (37%)

11 (42%)

  >3 days

9 (50%)

4 (50%)

13 (50%)

Bronchopulmonary dysplasia

   

 No

11 (61%)

4 (50%)

15 (58%)

 Yes

7 (39%)

4 (50%)

11 (42%)

Chorioamnionitis

   

 No

16 (89%)

8 (100%)

24 (92%)

 Yes

2 (11%)

0 (0%)

2 (8%)

Sepsis

4 (22%)

3 (38%)

7 (27%)

Parenteral nutrition, n=22 (days)

7 (5-9.5)a

11 (5.5-12.8)a

7.5 (5-12.8)a

Enteral feeding tube (days)

58 (45.7;69.9)

61.5 (21.9;101.1)

59 (46;72)

Mechanical ventilation, n=16 (days)

2 (0.8-9.5)a

37 (35-37)a

8.5 (1-35.5)a

CPAP, n=21 (days)

11 (5.3-45.8)a

5 (1.8-22)a

9 (5-45)a

Oxygenotherapy, n=20 (days)

27 (2.5-76.3)a

41 (2-92)a

32 (2-84)a

NICUs (days)

43 (27.3-66)a

30.5 (7.8-85.8)a

42 (18.5-77.8)a

Hospital stay (days)

68 (44.8-81.3)a

39 (27-105.5)a

64 (41-90)a

  1. a Median (IQR)