Table 2 Neonatal outcomes among offspring of mothers with a documented penicillin allergy versus those without a documented penicillin allergy
Outcome | Documented maternal penicillin allergy (n = 1170) | Absence of documented maternal penicillin allergy (n = 10164) | p-value | OR (95% CI) | aOR (95% CI)c |
|---|---|---|---|---|---|
Blood drawn for lab testa | 243 (20.8) | 1758 (17.3) | < 0.01 | 1.25 (1.08–1.46) | 1.23 (1.06–1.43) |
 Complete blood count | 241 (20.6) 40 (3.4) | 1751 (17.2) 331 (3.3) |  |  |  |
 C-reactive protein | 209 (17.9) | 1447 (14.2) |  |  |  |
 Blood culture |  |  |  |  |  |
Positive blood cultureb | 3 (3.3) | 16 (2.5) | 0.64 | 1.71 (0.56–5.21) | NAd |
Receipt of postnatal antibiotics | 80 (6.8) | 563 (5.5) | 0.07 | 1.25 (0.98–1.59) | 1.20 (0.94–1.53) |
NICU admission | 101 (8.6) | 775 (7.6) | 0.22 | 1.14 (0.92–1.42) | 1.11 (0.89–1.38) |
Birth hospitalization length of stay, hours | 56.6 (50.6–66.6) | 55.6 (50.0-64.4) | < 0.01 | NA | NA |