Outcomes in reported penicillin allergic mothers and neonates requiring Group B streptococcal prophylaxis: a retrospective observational cohort study

Table 3 Negative binomial regression of days on antibiotics for hospitalized patients

Predictors	Incidence Rate Ratios	95% CI	p-value
PcnA label	0.45	0.38 – 0.53	< 0.001*
BMI > 35	1.10	0.90 – 1.34	0.355
Age > 35 years	1.04	0.83 – 1.30	0.749
Twin pregnancy	1.38	0.94 – 2.01	0.099
Tobacco use	0.83	0.68 – 1.00	0.055

^*Statistical significance was set at p < 0.05, n = 440,440. BMI body mass index, PcnA penicillin allergy. Days on antibiotics were adjusted for BMI, age, twin pregnancy, and tobacco use in the regression analyses

ISSN: 1471-2431