Table 1.

Newborn and mother characteristics.

Newborns, n = 100
Gender: Male (%)	56.0%
Birth weight (g), mean ± standard deviation (SD), (range)	3427 ± 455 (2140–4960)
≤15th percentile	15%
≥85th percentile	14%
Mothers, n = 100
Age (years), mean ± SD (range)	27.7 ± 5.3 (18–41)
Vaginal birth (induction with oxytocin)	39% (21 from 100)
First pregnancy	60%
First delivery	62%
Antibiotic therapy during pregnancy	30%
Antibiotic therapy during childbirth * (prevention of GBS infection)	81% (20%)
Median (range) increase in BMI during pregnancy	5.7 (0.58–11.2)
A. Categories: BMI before pregnancy	<18.5	≤18.5 <25	≥25 <30)	≥30
Percent within each BMI category A.	12%	56%	20%	12% (12%)
B. Categories: BMI before childbirth	<18.5	≤18.5 <25	≥25 <30	≥30
Percent within each BMI category B.	0%	16%	36%	48% (48%)
C. Categories: Weight gain during pregnancy	<12 kg	12–18 kg	>18 kg
Percent in each weight gain category C.	25%	39%	36%

BMI: Body Mass Index; *: half an hour before Caesarean section, a woman received intravenous cefazolin at a dose of 2 g. If cervical colonization of Streptococcus agalactiae was found or with lack of evidence of no colonization, women received intravenous ampicillin at 2 g which was repeated every 4 h until the child was born.