Prevalence and Clinical Significance of Streptococcus dysgalactiae subspecies equisimilis (Groups C or G Streptococci) Colonization in Pregnant Women: A Retrospective Cohort Study

Table 1

Selected clinical characteristics and demographics of the study population. Numbers are percentages or means (min, max).

	Streptococcus G or C	Streptococcus B	Negative	-value
Mothers
Infants
Variables
Age, years, mean (min, max)	30.3 (19,44)	30.3 (18,44)	30.2 (19,44)	0.973
BMI, median, kg/m^2 (min, max)	23.5 (16,48)	23.5 (16,56)	22.9 (16,51)	0.114
BMI 30	16.2	18.6	18.1	0.051
Nulliparous	42.0	41.3	40.6	0.920
Current smoker	14.7	15.6	17.0	0.659
Caucasian	98.6	96.7	97.1	0.170
Gestational diabetes	16.7	19.2	17.8	0.496
Caesarean delivery	11.4	16.4	12.4	0.086
Anaemia	4.3	4.8	4.3	0.928
Antibiotic treatment during delivery	35.6	92.4	20.4	<0.001
Blood loss 1000 ml	5.9	6.9	7.4	0.675
Gestational age ≤ 37 weeks	4.8	2.9	5.7	0.115
Gestational age ≥ 42 weeks	6.2	3.1	2.1	0.007
Apgar score 1 min < 3	0.5	1.2	0.9	0.527
Apgar score 5 min < 7	1.6	1.9	2.3	0.795

BMI = body mass index (calculated as persons weight in kilograms divided by square of height in meters). Including prophylactic antibiotics for Streptococcus B colonization, treatment for suspected chorioamnionitis, and prophylactic antibiotics during cesarean section. Age and BMI were compared between three groups using ANOVA or the Kruskall-Wallis test and the other variables with chi-squared test or Fisher’s exact test.