Table 2.
Ambient and indoor PM gamma activities, temperature and relative humidity on the day of urine collection (day 0), weekly BC and season of assessment in 81 COPD patients (n=231 for ambient and n=222 for indoor).
| Variables | Median (25-75th percentile) |
Range |
|---|---|---|
| Daily temperature (°C) | 13.1 (4.4 – 20.0) | −12.2 – 28.0 |
| Daily relative humidity (%) | 63.8 (52.3 – 77.6) | 30.7 – 97.0 |
| Ambient weekly BC concentration (μg/m3) | 0.54 (0.41 – 0.78) | 0.27 – 1.20 |
| Ambient weekly PM concentration (μg/m3) | 6.03 (5.02 – 7.97) | 3.64 –13.4 |
| Ambient weekly NO2 concentration (ppb) | 24.8 (21.2 – 29.7) | 14.5 – 41.4 |
| Ambient weekly O concentration (ppb) | 53.1 (44.2 – 62.6) | 26.2 – 75.6 |
| Ambient daily PM-gamma3 activity (CPM) | 4.3 (−25.6-51.1) | −195.6 - 265.5 |
| Ambient daily PM-gamma4 activity (CPM) | −0.01 (−6.1-10.0) | −53.9 - 43.4 |
| Ambient daily PM-gamma5 activity (CPM) | 1.0 (−4.5-6.6) | −37.2 - 31.4 |
| Ambient daily PM-gamma6 activity (CPM) | 0.23 (−1.6-2.7) | −25.3 - 14.3 |
| Ambient daily PM-gamma7 activity (CPM) | −0.04 (−2.4-3.7) | −26.3 - 18.6 |
| Ambient daily PM-gamma8 activity (CPM) | 0.60 (−2.9-4.3) | −26.7 - 43.4 |
| Ambient daily PM-gamma9 activity (CPM) | 0.08 (−0.43-0.44) | −3.2 - 3.2 |
| Indoor weekly BC concentration (μg/m3) | 0.18 (0.09 – 0.31) | −0.42 – 0.95 |
| Indoor weekly PM2.5 concentration (μg/m3) | 6.90 (4.78 – 8.93) | 0.26 – 42.8 |
| Indoor weekly NO2 concentration (ppb) | 12.3 (8.45 – 19.5) | 1.09 – 112 |
| Indoor weekly O concentration (ppb) | 19.6 (26.4 – 47.6) | 0.02 – 463 |
| Indoor daily PM-gamma3 activity (CPM) | −0.03 (−22.2-32.5) | −151.1 - 205.2 |
| Indoor daily PM-gamma4 activity (CPM) | −0.26 (−4.3-5.5) | −38.4 - 38.8 |
| Indoor daily PM-gamma5 activity (CPM) | 0.00 (−3.3-3.9) | −24.4 - 29.1 |
| Indoor daily PM-gamma6 activity (CPM) | 0.01 (−1.1-1.6) | −15.1 - 15.7 |
| Indoor daily PM-gamma7 activity (CPM) | −0.19 (−2.1-2.2) | −16.1 - 17.3 |
| Indoor daily PM-gamma8 activity (CPM) | 0.37 (−1.9-3.4) | −22.0 - 29.8 |
| Indoor daily PM-gamma9 activity (CPM) | 0.00 (−0.31-0.30) | −2.0 - 3.0 |