Table 2.
Associations between daily weather conditions and physical activity (steps/day) in a typical week among 972 grade 5 students in Alberta, Canada in 2013
| Unadjusted model | Adjusted modela | |||||
|---|---|---|---|---|---|---|
| β | 95% CI | p | β | 95% CI | p | |
| Temperature (per 1 °C) | ||||||
| Actual temperature | 15 | − 16, 44 | 0.3 | 22 | − 7, 51 | 0.1 |
| Feels-like temperature | 23 | − 1, 48 | 0.06 | 24 | 1, 48 | 0.04 |
| Cloud coverage (per 1 unit)b | − 97 | − 135, − 58 | < 0.001 | − 61 | − 99, − 22 | 0.002 |
| Total precipitation/day | ||||||
| None (0 mm) | Ref. | Ref. | ||||
| Light (0.01–5 mm) | − 556 | − 880, − 232 | 0.001 | − 209 | − 535, 116 | 0.2 |
| Heavy (> 5 mm) | − 957 | − 1500, − 416 | 0.001 | − 1022 | − 1557, − 487 | < 0.001 |
All weather conditions are considered as daily averages between 7:00 a.m. and 9:00 p.m., except precipitation which is total daily amount (mm)
CI confidence interval
aEstimates for each of weather conditions are derived from separate models. Each model is adjusted for sex, weight status, parent’s education, household income, day of the week, and school region. Weather conditions are not mutually adjusted
bCloud coverage ranges from 0 to 10, with 0 being clear sky and 10 being overcast