Table 2.
Intervention Unadjusted Mean (SD) |
Control Unadjusted Mean (SD) |
|||||
---|---|---|---|---|---|---|
Pre | Post | Pre | Post | |||
Variable | 80–82 Children 458–490 Person-Daysb |
23a Children 141–175 Person-Daysb |
73–75a Children 502–526 Person-Daysb |
30–31a Children 170–177 Person-Daysb |
Intervention Effectc (95% CI) |
p Value |
FEV1 intraday variability (%) | 15.1 (12.2) | 14.4 (12.1) | 14.2 (12.0) | 17.1 (13.7) | –1.3 (–5.8, 3.1) | .559 |
PF intraday variability (%) | 15.1 (12.6) | 8.7 (8.5) | 14.4 (12.3) | 11.6 (9.7) | –2.1 (–5.0, 0.8) | .153 |
Daily nadir FEV1 (% predicted) | 76.7 (22.3) | 83.1 (15.7) | 79.5 (19.9) | 75.6 (18.5) | 10.0 (0.9, 19.1) | .032 |
Daily nadir PF (% predicted) | 79.6 (19.9) | 94.1 (15.0) | 82.7 (18.0) | 85.1 (19.2) | 8.2 (1.1, 15.2) | .023 |
NOTE: CI = confidence interval; FEV1 = forced expiratory volume at one second; PF = peak expiratory flow.
Number of children varies in each regression based on available valid data.
Number of person-days varies in each regression based on available valid data.
The intervention effect is adjusted for age, gender, ethnicity, location of residence, and household income.