Patterns in dispensed antibiotics for children with and without pulmonary/respiratory, otologic, or immunological conditions. A, Mean cumulative number of antibiotic courses received per child between birth and age 5 years. B, Proportion of children who have received at least 1 antibiotic course between birth and age 5. C, Histograms of the number of antibiotics received per child by age 5, depicting the variation in number of antibiotic courses received across children. In panels (A) and (B), lines depict means and bands depict 95% confidence intervals according to a 2-tailed t-test for the mean. Colors correspond as follows: those without a pulmonary/respiratory, otologic, or immunological condition, black (lower lines in (A) and (B), left-most distribution in (C)); those with a pulmonary/respiratory, otologic, or immunological condition, red (upper lines in (A) and (B), right-most distribution in (C)).