Figure 1: Percent of antibiotic visits by antibiotic class for ED visits by children, by ED type, United States, 2009–2014.

Shading represents antibiotic class: dark grey are penicillins, light grey are cephalosporins, grey/white checkered are macrolides, black/white dotted are sulfonamides, white/grey diamonds are clindamycin (lincomycin derivative), and lightest grey are all other antibiotics. *P≤0.05 in comparison of non-pediatric versus pediatric ED. **Percentages sum to >100% because of co-prescribing at some visits.