Fig. 2

This figure visualizes a 19-month period of β-Lactam administration to various patient subgroups with documented penicillin allergies. Comparing data from before the intervention to after the intervention, there was a statistically significant increase in the percentage of β-Lactam administration for three separate analysis subgroups: patients with a low severity allergy reaction to penicillin (20% to 28%, p = 0.0007), patients with a nonspecific penicillin allergy reaction type (19% to 25%, p = 0.032), and overall for all patients with a documented penicillin allergy (19% to 23%, p = 0.006)