Table 1 Clinical Characteristic of women in preterm labor with or without E. coli colonization

50

44 (88)

6 (12)

Race

 • White

 • Hispanic

 • African-American

 • American-Indian

 • Asian

 • Other

27

12

5

2

1

3

24

10

5

1

1

3

3

2

0

1

0

0

Median maternal age in years (25 %-75 %)

26.1 (23.3-30.1)

25.2 (22.5-29.9)

27.6 (25.5-32.7)

Mean GA at Sample Collection (±SD)

32.9 (2.91)

32.9 (2.99)

32.8 (2.23)

Median length of hospital stay in days (25 %-75 %)

3 (2-5.25)

3 (2-5.75)

2 (1-10)

Delivered

27 (54)

24 (54.5)

3 (50)

Presence of ROM

13 (26)

13 (29)

0

Chorioamnionitis

 • Yes

 • No

 • Unknown

3 (6)

43 (86)

4 (8)

3 (7)

37 (84)

4 (9)

0

6 (100)

0

Nugent classification

 • Normal

 • Intermediate

 • Bacterial vaginosis

 • Invalid

20 (40)

13 (26)

16 (32)

1 (2)

17 (38.6)

12 (27.3)

14 (31.9)

1 (2.2)

3 (50)

1 (16.7)

2 (33.3)

0

GBS screening result

 • Positive

 • Negative

 • Not performed

11 (22)

34 (68)

5 (10)

9 (20.5)

30 (68.2)

5 (11.3)

2 (33.3)

4 (66.6)

0