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Weighted proportions of complete blood count, chest radiography, and antibiotic use for outpatient young children with community-acquired pneumonia in the United States according to year. (a) Complete blood count; (b) chest radiography; (c) blood cultures; (d) any antibiotics; (e) narrow-spectrum antibiotics. Error bars, 95% confidence interval; dotted line, year of Pediatric Infectious Diseases Society/Infectious Diseases Society of America pediatric CAP guideline publication (2011).
