Table 4.
Associations between air quality and sedentary time (minutes).
| Unadjusted | Adjusted 1 | ||||||
|---|---|---|---|---|---|---|---|
| Estimate (SE) | 95% CI | p | Estimate (SE) | 95% CI | p | ||
| AQI | Excellent | −12.21 (6.56) | −25.08, 0.65 | 0.063 | −19.20 (8.63) * | −34.91, −3.49 | 0.017 |
| Good | −17.44 (6.51) ** | −30.20, −4.69 | 0.007 | −22.92 (7.94) ** | −38.48, −7.35 | 0.004 | |
| Lightly polluted | −9.10 (6.48) | −21.79, 3.60 | 0.160 | −21.28 (7.91) ** | −36.78, −5.78 | 0.007 | |
| Moderately and heavily polluted (ref) | - | - | - | - | - | - | |
| PM2.5 | 0–35 µg/m3 | −36.80 (10.64) *** | −57.65, −15.94 | 0.001 | −45.35 (12.21) *** | −69.29, −21.41 | 0.000 |
| 35–75 µg/m3 | −36.77 (10.63) *** | −57.61, −15.93 | 0.001 | −45.74 (12.19) *** | −69.64, −21.84 | 0.000 | |
| 75–115 µg/m3 | −33.13 (10.80) ** | −54.29, −11.96 | 0.002 | −45.54 (12.35) *** | −69.74, −21.33 | 0.000 | |
| >115 µg/m3 (ref) | - | - | - | - | - | - | |
| PM10 | 0–50 µg/m3 | −32.81 (32.87) | −97.24, 31.62 | 0.318 | −32.59 (32.60) | −96.49, 31.31 | 0.318 |
| 50–150 µg/m3 | −36.31 (32.85) | −100.68, 28.07 | 0.269 | −35.65 (32.57) | −99.48, 28.18 | 0.274 | |
| 150–250 µg/m3 | −26.47 (32.92) | −90.99, 38.06 | 0.421 | −31.07 (32.66) | −95.08, 32.94 | 0.341 | |
| >250 µg/m3 (ref) | - | - | - | - | - | - | |
| O3 | 0–160 µg/m3 | −3.74 (8.25) | −19.83, 12.34 | 0.648 | −6.17 (10.57) | −26.89, 14.55 | 0.560 |
| 160–200 µg/m3 | −2.68 (8.30) | −18.94, 13.58 | 0.747 | −6.14 (10.63) | −26.98, 14.69 | 0.563 | |
| 200–300 µg/m3 | 3.93 (8.16) | −12.05, 19.92 | 0.629 | −5.53 (10.50) | −26.11, 15.04 | 0.598 | |
| >300 µg/m3 (ref) | - | - | - | - | - | - | |
1 Adjusted for gender, weather, temperature, weekday/weekend and monitored wake time per day. * p < 0.05, ** p < 0.01, *** p < 0.001.