Table 1

Demographics of maternal and neonatal populations in four study groups and duration of UIAP

Group 1
(<1 hour)
Group 2
(≥1 and <2 hours)
Group 3
(≥2 and <4 hours)
Group 4
(≥4 hours)
Cases, n30303030
Sex, M/F18/129/2117/1319/11
Duration of IAP, min*37.5 (23–46)98.0 (79–109)163.0 (145–191)620.5 (420–958)
Gestational age, weeks*39 (39–40)39 (38–40)40 (39–40)40 (39–41)
Birth weight, g*3455 (3135–3715)3175 (2980–3730)3385 (3180–3675)3385 (3240–3620)
Maternal age, years*34.5 (28–38)31.0 (29–35)31.5 (26–36)32.0 (30–34)
Maternal BMI at delivery, median (IQR), kg/m2 26.75 (24.24–29.41)27.51 (24.34–29.41)25.45 (24.22–29.75)27.58 (24.91–31.11)
Ethnicity, n (%)
 Caucasian19 (63)21 (70)20 (67)17 (57)
 African10 (33)4 (13)9 (30)9 (30)
 Asian1 (3)5 (17)1 (3)3 (10)
 South-American0001 (3)
  • *Values are expressed as median (25th to 75th percentiles).

  • BMI, body mass index; IAP, intrapartum antibiotic prophylaxis; F, female; M, male.