Table 1: Characteristics of the GBS+, penicillin-allergic patients who delivered at Magee-Womens hospital in 2010 (postexclusion criteria).

CharacteristicsNumberPercentage (95% confidence interval [CI])

Total 138
Median age (y)30 (16–41)
Median gravidity2 (1–9)
Median parity1 (0–5)
Race/ethnicity
 Non-Hispanic White11482.6 (75.4–88.1)
 Non-Hispanic African-American2316.7 (11.3–13.8)
 Other10.7 (0–4.4)
Type of insurance
 Private9770.3 (62.2–77.3)
 Medical assistance4129.7 (22.7–37.8)
Obstetrical provider Type
 Private physician10072.5 (64.5–79.3)
 Maternal fetal medicine32.2 (0.5–6.5)
 OB/GYN residents2518.1 (12.5–25.4)
 Midwife 85.8 (2.8–11.2)
 Family practitioner21.4 (0.07–5.5)
Type of delivery
 Vaginal11684.1 (77.0–89.3)
 Cesarean after labor2215.9 (10.7–23.0)
Patient documentation of nature of the penicillin allergy7856.5 (48.2–64.5)
Patients with documentation that they received antibiotic prophylaxis13597.8 (93.5–99.5)
Type of antibiotics received
 Cephalosporin4130.4 (23.2–38.6)
 Clindamycin5440 (32.1–48.4)
 Erythromycin21.5 (0.07–5.6)
 Vancomycin3626.7 (19.9–34.7)
 Penicillin21.5 (0.07–5.6)