Table 2 Relationship between daily step count and environmental factors (climate, pollutants and weeksday) over the full week, and during weekdays only; allowance was made for season, linear trend and day-length (data for these variables not shown)
From: Influence of weather and atmospheric pollution on physical activity in patients with COPD
| Â | Over full week | Weekdays only | ||||
|---|---|---|---|---|---|---|
| Â | Regression coefficient | 95Â % CI | p-value | Regression coefficient | 95Â % CI | p-value |
Temperature (°C) | 37.7 | 14.1 to 61.4 | 0.002 | 36.5 | 9.6 to 63.4 | 0.008 |
Sunshine (%Â day) | 4.7 | 2.8 to 6.7 | <0.001 | 4.0 | 1.8 to 6.2 | <0.001 |
Rainfall (mm) | -16.8 | -27.1 to -6.6 | 0.001 | -15.3 | -26.4 to -4.2 | 0.007 |
Wind speed (m/s) | -17.2 | -37.6 to 3.2 | 0.099 | -43.8 | -66.2 to -21.5 | <0.001 |
PM10 (μg/m3) | -5.4 | -12.2 to 1.3 | 0.112 | -7.8 | -14.2 to -1.3 | 0.018 |
O3 (μg/m3) | -8.0 | -13.5 to -2.4 | 0.005 | -3.5 | -9.4 to 2.4 | 0.239 |