Table 2.
Descriptive results of distribution of air pollution exposure within 3 months and 1 year post to index dysphagia date among study subjects.
| Pollutants | Value | Min | Percentile | Max | IQR | ||
|---|---|---|---|---|---|---|---|
| 25% | 50% | 75% | |||||
| Within 3 months after Dysphagia (mean ± sd) | |||||||
| PM10 | 63.36 ± 23.27 | 21.33 | 60.00 | 83.00 | 117.00 | 43.33 | 39.67 |
| PM2.5 | 29.28 ± 13.15 | 5.00 | 28.33 | 39.67 | 65.33 | 17.33 | 22.33 |
| NO | 4.16 ± 1.89 | 0.87 | 3.76 | 4.94 | 15.82 | 2.89 | 2.05 |
| NO2 | 18.57 ± 6.25 | 3.19 | 17.82 | 23.30 | 35.21 | 13.63 | 9.67 |
| CO | 0.50 ± 0.15 | 0.12 | 0.48 | 0.61 | 1.05 | 0.37 | 0.23 |
| SO2 | 5.12 ± 1.67 | 1.20 | 4.67 | 6.13 | 10.80 | 3.97 | 2.17 |
| NOx | 22.72 ± 7.77 | 4.27 | 21.22 | 27.81 | 49.13 | 16.72 | 11.09 |
| O3 | 27.48 ± 5.67 | 5.67 | 27.10 | 31.60 | 45.73 | 23.63 | 7.97 |
| Within 1 year after Dysphagia (mean ± sd) | |||||||
| PM10 | 65.17 ± 9.54 | 37.08 | 66.75 | 71.67 | 87.38 | 58.00 | 13.67 |
| PM2.5 | 30.60 ± 5.97 | 17.58 | 27.92 | 34.25 | 49.31 | 26.67 | 7.58 |
| NO | 4.28 ± 1.37 | 1.16 | 4.03 | 5.06 | 9.13 | 3.31 | 1.75 |
| NO2 | 19.02 ± 3.20 | 6.46 | 18.80 | 21.45 | 26.48 | 16.80 | 4.64 |
| CO | 0.51 ± 0.09 | 0.29 | 0.50 | 0.56 | 0.82 | 0.45 | 0.11 |
| SO2 | 5.26 ± 1.46 | 1.66 | 4.88 | 6.17 | 10.13 | 4.34 | 1.83 |
| NOx | 23.31 ± 4.44 | 7.71 | 22.92 | 26.35 | 35.61 | 20.47 | 5.88 |
| O3 | 27.58 ± 2.94 | 15.40 | 27.12 | 29.59 | 35.97 | 25.96 | 3.63 |
Min, minimum; max, maximum; IQR, interquartile range.