Table I.

Sample characteristics.

Age (years), No. (%)
All	305 (100)
6 to 11	164 (54)
12 to 17	141 (46)
Age at randomization, mean (SD), years	11(3)
Sex, No. (%)
Female	118 (39)
Male	187 (61)
Race, No. (%)
White	102 (34)
Black	154 (50)
Hispanic	34 (11)
Other	15 (5)
Asthma Characteristics
Age at asthma onset, mean (SD), years	3 (3)
Urgent care for asthma in past year, No. (%)	224 (73)
Oral corticosteroids for asthma in past year, No. (%)	206 (67)
Use of rescue inhaler 2 or more times/week*, No. (%)	227 (74)
Daily use of ICS/LABA in past 6 months, No. (%)	177 (58)
Daily use of leukotriene modifying agent, No. (%)	167 (55)
Self-Reported Atopic Conditions, No. (%)
Rhinitis	181 (59)
Eczema	133 (43)
Food allergies	81 (26)
Allergies worsen asthma	245 (80)
Asthma Questionnaires, mean (SD)
ACQ at randomization+	1.2 (0.8)
cACT (ages 6-11) ++	19 (4)
ACT (ages 12-17)#	20 (4)
ASUI##	0.82 (0.15)
Lung Function, mean (SD)
Pre-bronchodilator FEV1, % predicted	91.9 (15.9)
Post-bronchodilator FEV1, % predicted	99.7 (14.8)
Pre-bronchodilator FVC, % predicted	100.8 (14.2)
Post-bronchodilator FVC, % predicted	103.0 (14.2)
Change in FEV1 after bronchodilator	9.7 (11.1)
Change in FVC after bronchodilator	2.8 (6.2)

^*Use of rescue inhaler is based on self-report of average use in month prior to screening visit.

⁺Range of ACQ score is 0 to 6 with lower scores indicating better asthma control.

⁺⁺Range of cACT score is 0 to 27 with higher scores indicating better asthma control.

^#Range of ACT score is 5 to 25 with higher scores indicating better asthma control.

^##Range of ASUI score is 0 to 1 with higher scores indicating better asthma control.