Table 3.
Sensitivity and specificity of different PM2.5 thresholds for indicating the presence of an excursion. The best threshold (as measured by the sum of sensitivities and specificities across each row) for each exposure metric and each health outcomes is highlighted in bold.
| PM2.5 Exposure Metric | PM2.5 Exposure Category | Sensitivity for Asthma-Related Physician Visits | Specificity for Asthma-Related Physician Visits | Sensitivity for Salbutamol Dispensations | Specificity for Salbutamol Dispensations |
|---|---|---|---|---|---|
| Monitor | ≥5 µg/m3 | 25.1 | 84.2 | 27.0 | 80.3 |
| ≥10 µg/m3 | 35.7 | 91.5 | 41.6 | 86.5 | |
| ≥25 µg/m3 | 71.4 | 91.0 | 85.7 | 85.3 | |
| Model | ≥5 µg/m3 | 27.4 | 92.2 | 26.8 | 68.6 |
| ≥10 µg/m3 | 34.7 | 91.3 | 32.4 | 83.0 | |
| ≥25 µg/m3 | 58.1 | 89.8 | 67.7 | 84.0 | |
| BlueSky | ≥5 µg/m3 | 28.1 | 90.7 | 22.9 | 81.7 |
| ≥10 µg/m3 | 32.7 | 91.5 | 23.1 | 81.9 | |
| ≥25 µg/m3 | 30.8 | 90.4 | 46.2 | 85.0 | |
| FireWork | ≥5 µg/m3 | 34.4 | 92.1 | 27.9 | 82.7 |
| ≥10 µg/m3 | 34.8 | 90.8 | 31.2 | 83.9 | |
| ≥25 µg/m3 | 37.8 | 90.0 | 27.0 | 84.0 |