Table 3.
Characteristics of variables used in multiple regression models.
| Variable | N | Geometric mean | Range |
|---|---|---|---|
| Personal Mn (ng/m3) | 38 | 8.1 | 1.47–54.48 |
| Stationary Mn (ng/m3) | 38 | 11.0 | 4.53–34.54 |
| Personal PM2.5 (μg/m3) | 38 | 16.9 | 5.64–58.04 |
| Stationary PM2.5 (μg/m3) | 38 | 10.8 | 7.06–18.34 |
| Mean (sd) | |||
|
| |||
| Time weighted distance (km) | 38 | 11.24 (4.69) | 4.72–28.52 |
| Wind index | 38 | 0.46 (0.35) | 0.00–1.00 |
| Wind speed (km/h) | 38 | 8.08 (3.15) | 2.63–14.97 |
| Average precipitation (cm) | 38 | 0.43 (0.54) | 0–2.25 |
| Elevation (m) | 38 | 70.48 (10.13) | 56.32–96.61 |
| Percent child spent outdoors | 38 | 14 (12) | 0–45 |