Exposure data and demographic characteristics of the groups (means, SDs, medians, interquartile ranges)
| Exposed n=154 | Controls n=124 | |||||||
|---|---|---|---|---|---|---|---|---|
| Variables | Mean | SD | Median | Range | Mean | SD | Median | Range |
| Age (y) | 39.3 | 9.6 | 39.0 | 31.0–48.0 | 40.5 | 9.5 | 39.5 | 32.0–48.0 |
| Education (y | 9.3 | 1.2 | 9.0 | 9.0–10.0 | 9.1 | 1.4 | 9.0 | 8.0–10.0 |
| Employment (y) | 15.3 | 9.7 | 11.9 | 7.5–23.3 | 14.5 | 8.6 | 10.5 | 7.5–19.8 |
| Long term exposure, LWAE (ppm) | 45.1 | 16.4 | 41.4 | 34.2–57.9 | 9.3 | 7.6 | 6.2 | 5.8–10.6 |
| Current exposure (ppm) | 24.7 | 17.6 | 20.1 | 11.1–34.5 | 3.3 | 4.8 | 1.9 | 1.3–2.9 |