TABLE 1

Baseline Characteristics of Study Population According to Group Assignment

CharacteristicsIntervention Group (N = 110)Control Group (N = 115)P
Age, mean ± SD, y8.8 ± 1.88.4 ± 1.8.160
Male, n (%)74 (67)65 (57).097
Race, n (%).565
    Black65 (59)60 (52)
    White43 (39)52 (45)
    Other2 (2)3 (3)
Annual household income, mean ± SD, $30 524 ± 24 41629 595 ± 21 649.767
No. of unscheduled asthma visits in previous 3 mo, mean ± SD0.6 ± 1.01.0 ± 1.4.013
Measures of asthma severity, n (%)
    Allergy severity (moderate to very severe)47 (43)55 (48).443
    Shortness of breath (moderate to very severe)46 (42)61 (53).104
    Tightness in chest (moderate to very severe)29 (27)37 (33).317
    Wheeze (moderate to very severe)44 (40)46 (40).955
    Difficulty sleeping (moderate to very severe)42 (38)53 (46).208
    Steroid therapy in previous 3 mo30 (27)37 (34).305
    Long-acting steroid therapy58 (53)60 (52).877
Duration of asthma, mean ± SD, d9.8 ± 18.710.2 ± 11.7.841
Serum immunoglobulin E levels of ≥0.35 kU/L for common allergens, n (%)74 (67)70 (61).310
Exhaled nitric-oxide level, mean ± SD, ppb14.7 ± 10.016.3 ± 12.3.302