Table 3.
Coefficients for clinical and demographic parameters of mixed effects model assessing steps per day (all days, hot days, and cold days).
| Clinical Characteristics | Coefficient | 95% CI | p value | ||
|---|---|---|---|---|---|
| All days | c-ACT | -4 | -54 | 47 | 0.891 |
| Age (yr) | 18 | -256 | 292 | 0.897 | |
| BMIz | -297 | -636 | 43 | 0.087 | |
| Gender (boy) | 1014 | 84 | 1944 | 0.033 | |
| Atopy | 455 | -657 | 1567 | 0.422 | |
| FEV1% | -15 | -53 | 22 | 0.425 | |
| FVC % | -25 | -68 | 17 | 0.240 | |
| Hot days1 | c-ACT | -26 | -195 | 143 | 0.762 |
| Age (yr) | -57 | -402 | 289 | 0.748 | |
| BMIz | -441 | -882 | 1 | 0.050 | |
| Gender (boy) | 1223 | 56 | 2390 | 0.040 | |
| Atopy | 803 | -818 | 2424 | 0.332 | |
| FEV1% | -6 | -62 | 50 | 0.831 | |
| FVC % | -22 | -87 | 42 | 0.495 | |
| Cold days2 | c-ACT | -2 | -114 | 109 | 0.967 |
| Age (yr) | 35 | -249 | 319 | 0.808 | |
| BMIz | -597 | -963 | -202 | 0.001 | |
| Gender (boy) | 1026 | 49 | 2004 | 0.04 | |
| Atopy | 731 | -374 | 1836 | 0.195 | |
| FEV1% | 4 | -35 | 42 | 0.858 | |
| FVC % | 1 | -43 | 45 | 0.966 | |
CI confidence interval, p-value probability value, BMI body mass index, c-ACT childhood asthma control test, FEV1% forced expiratory volume in one second, FVC % forced vital capacity, percent predicted.
1Hot days refer to days > 80th percentile temperature for each country.
2Cold days refer to days < 20th percentile temperature.