TABLE 2:

Use of intrapartum antibiotics in mothers of infants with early-onset neonatal group B streptococcal (GBS) disease in the presence or absence of clinical risk factors

Clinical risk factor	Number (%) with risk factor receiving antibiotics*	Number (%) without risk factor receiving antibiotics*	P
Intrapartum fever >38°C	8/13 (61.5)	4/58 (6.9)	<0.001
Chorioamnionitis	6/10 (60)	5/53 (9.4)	<0.001
GBS positive status†	5/6 (83.3)	0/1 (0)	0.09
Prolonged rupture of membranes ≥12 h	9/30 (30)	5/37 (13.5)	0.10
Prolonged rupture of membranes ≥18 h	7/17 (41.2)	7/50 (14)	0.02
Gestational age <37 weeks	8/31 (25.8)	6/42 (14.3)	0.22

^*Numerator is number of patients given antibiotics, denominator is number of patients with clinical risk factor present or absent. Denominators do not always total 76 because of missing data;

^†GBS positive or negative results either from screening before delivery or from cultures analyzed at delivery. Most women did not have this information recorded on their health record