TABLE 3

Numbers of Unscheduled Asthma Visits, Asthma Symptoms, Reported Exposure to Tobacco Smoke, and Exhaled Nitric-Oxide Levels According to Group Assignment

Characteristics3 mo6 mo9 mo12 moP
No. of unscheduled asthma visits in previous 3 mo, mean.043a
    Intervention group (n = 110)0.70.50.40.3
    Control group (n = 115)0.60.50.90.6
Moderate/severe allergy in previous 3 mo, %.618
    Intervention group (n = 110)35324033
    Control group (n = 115)38403434
In previous 2 wk, how much of time has <child's name> had
    Shortness of breath (some, most, or all of time), %.415
        Intervention group (n = 110)34282919
        Control group (n = 115)36272428
    Tightness in chest (some, most, or all of time), %.612
        Intervention group (n = 110)22161814
        Control group (n = 115)22101617
    Wheeze (some, most, or all of time), %.168
        Intervention group (n = 110)32152213
        Control group (n = 115)25201519
    Difficulty sleeping (some, most, or all of time), %.299
        Intervention group (n = 110)26212721
        Control group (n = 115)27181618
Prescription for steroid therapy in previous 3 mo, %.811
    Intervention group (n = 110)19131619
    Control group (n = 115)27251827
Prescription for long-acting steroid therapy in previous 3 mo, %.135
    Intervention group (n = 110)36434239
    Control group (n = 115)46393037
No. of episodes of asthma, mean.294
    Intervention group (n = 110)8.94.36.54.5
    Control group (n = 115)9.36.06.36.8
Exhaled nitric-oxide level, mean, ppb.313
    Intervention group (n = 110)16.416.1
    Control group (n = 115)15.016.8
No. of cigarettes smoked around house per d, mean.977
    Intervention group (n = 110)7.511.27.59.5
    Control group (n = 115)7.510.67.19.5
  • a Test of group difference in trends over time (group-time interaction), adjusted for differences in the number of baseline visits.