Table 3.
Distribution of meteorological and air pollutant exposure levels in patients with IPF
| Air pollutants | Acute exacerbation | No acute exacerbation | ||||||
|---|---|---|---|---|---|---|---|---|
| Mean | Min | Median | Max | Mean | Min | Median | Max | |
| Temperature (°C) | 14.1 | − 3.3 | 13.4 | 28.0 | 16.3 | − 9.4 | 16.4 | 30.0 |
| Humidity (%) | 67.4 | 42.7 | 68.6 | 87.0 | 66.8 | 36.0 | 67.0 | 87.0 |
| SO2 (ppb) | 2.6 | 0.0 | 2.6 | 12.5 | 2.8 | 0.0 | 3.0 | 8.0 |
| NO (ppb) | 10.8 | 1.1 | 3.4 | 98.0 | 5.6 | 1.0 | 4.0 | 69.0 |
| NO2 (ppb) | 16.7 | 3.1 | 14.7 | 37.0 | 14.9 | 2.0 | 14.0 | 46.0 |
| NOX (ppb) | 26.4 | 2.5 | 16.5 | 133.0 | 20.5 | 4.0 | 17.0 | 106.0 |
| CO (ppb) | 460.4 | 81.6 | 412.1 | 2101.0 | 411.4 | 100.0 | 400.0 | 1700.0 |
| O3 (ppb) | 28.0 | 6.2 | 28.2 | 47.6 | 29.2 | 5.0 | 28.0 | 57.0 |
| PM2.5 (µg/m3) | 17.0 | 6.0 | 16.8 | 42.6 | 15.3 | 1.6 | 14.8 | 43.6 |
| PM10 (µg/m3) | 20.1 | 7.7 | 19.3 | 30.3 | 20.7 | 6.0 | 20.0 | 51.0 |
SO2 sulfur dioxide, NO nitric oxide, NO2 nitrogen dioxide, NOX nitrogen oxides, CO carbon monoxide, O3 ozone, PM2.5 particulate matter < 2.5 µm, PM10 particulate matter < 10 µm