Association of sexually-transmitted infection and African–American race with Streptococcus agalactiae colonization in pregnancy

Table 1 Characteristics of Pregnant Women in Study (N = 1513)

Characteristic	Number (%)^a Or mean ± SD, median, range^a	Number Unknown/NA (%)
GBS colonization	526 (34.8)	2 (0.1)^b
STI during this pregnancy	536 (37.0)	64 (4.2)
C. trachomatis	332 (22.9)	64 (4.2)
N. gonorrhea	117 (8.1)	64 (4.2)
T. vaginalis	296 (20.4)	64 (4.2)
Antibiotic exposure^c	786 (55.1)	87 (5.8)
HIV positive	14 (0.1)	54 (3.6)
Term delivery	1343 (91.4)	44 (2.9)
GBS in prior pregnancy	189 (23.2)	700 (46.3)—NA
Race		22 (1.5)
African–American	1114 (74.7)
White	201 (13.5)
Hispanic	141 (9.5)
Other	35 (2.3)
Age (years)	24.4 ± 5.8, 23.0, 13–49	18 (1.2)
Weight (lbs)	191.6 ± 49.8, 182.0, 96–408	69 (4.6)
Height (in)	64.0 ± 2.9, 64.0, 49–74	94 (6.2)
BMI	32.8 ± 7.9, 31.3, 18.8–70.1	94 (6.2)
Gravidity	2.7 ± 1.8, 2.0, 1–20	2 (0.1)

^aCalculated from non-missing values
^bAmong the 1513 pregnant women, 2 have missing values for GBS and these 2 women have STI. The STI of these 2 women cannot be correlated to their unknown GBS. For purposes correlating STI and GBS, they are among the 66 with missing values (Table 2)
^cIncludes all antibiotic treatments for any infections diagnosed during the pregnancy, excluding IAP

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