Table 3.
Outcomes for the Peak Winter Season Stratified by Smoke Exposure
| No Smoke Exposure in Home |
Smoke Exposure in Home |
|||||
|---|---|---|---|---|---|---|
| Outcome | Treatment Group (n=123) |
Control Group (n=120) |
Difference (95% CI) or RR (95% CI)a |
Treatment Group (n=137) |
Control Group (n=143) |
Difference (95% CI) or RR (95% CI)a |
| Symptoms in peak winter season, November-February, mean (SD) |
||||||
| Symptom-free days/2 wk | 11.6 (2.6) | 10.5 (2.9) | 0.91 (0.31 to 1.51)b | 11.6 (2.5) | 10.9 (3.2) | 0.96 (0.39 to 1.52)b |
| Symptom nights/2 wk | 1.8 (2.1) | 2.7 (2.5) | −0.73 (−1.22 to −0.25)b | 1.6 (2.3) | 2.0 (2.5) | −0.63 (−1.09 to −0.18)b |
| Days with activity limitation/2 wk | 1.2 (1.8) | 1.9 (2.2) | −0.48 (−0.92 to −0.03)b | 1.4 (2.2) | 1.7 (2.4) | −0.44 (−0.87 to −0.02)b |
| Days with rescue medication use/2 wk | 1.7 (2.1) | 2.9 (2.7) | −1.08 (−1.58 to −0.57)b | 1.5 (2.2) | 2.4 (2.6) | −1.04 (−1.51 to −0.56)b |
| Days absent due to asthma/2 wk | 0.4 (0.7) | 0.5 (0.7) | −0.11 (−0.26 to 0.04)b | 0.3 (0.6) | 0.5 (0.7) | −0.22 (−0.36 to −0.07)b |
| ≥1 Visit for acute exacerbation of asthma, No. (%) | 16 (13) | 25 (21) | 0.76 (0.42 to 1.36)c | 15 (11) | 24 (17) | 0.55 (0.26 to 1.15)c |
Abbreviations: CI, confidence interval; RR, relative risk.
a
Results of the multivariate analysis are adjusted for baseline symptoms, child’s age, sex, race, caregiver’s education, insurance, and maternal depression.
b
Values are expressed as difference (95% CI).
c
Values are expressed as RR (95% CI).