Figure 1.

Flow chart of each population subgroup used in the different analysis presented. The subgroup with 3,339 children 6 to 9 years of age was selected based on the use of at least one inhaled corticosteroid (ICS) and one rescue corticosteroid (RCS) in that 3-year period, indicating a cohort with a level of severity that benefits taking an ICS on a monthly basis. ED = emergency department; LABA = long-acting β-agonist; SABA = short-acting β-agonist; TABS = Tennessee Asthma and Bronchiolitis Study.