Table 1 Socio-demographic characteristics
From: Neurocognitive impact of metal exposure and social stressors among schoolchildren in Taranto, Italy
|  | Total N = 299 | 0–1 km N = 51 | 1–5 km N = 55 | 5–10 km N = 118 | 10–15 km N = 75 |
|---|---|---|---|---|---|
N (%) | |||||
 Sex | |||||
  Female | 161 (53.8) | 39 (76.5) | 29 (52.7) | 55 (46.6) | 38 (50.7) |
 SES | |||||
  Low | 124 (41.5) | 35 (68.6) | 26 (47.3) | 38 (32.2) | 25 (33.3) |
  Medium | 103 (34.4) | 15 (29.4) | 19 (34.5) | 39 (33.1) | 30 (40.0) |
  High | 72 (24.1) | 1 (2.0) | 10 (18.2) | 41 (34.7) | 20 (26.7) |
Mean (SD) | |||||
  Age (yrs) | 8.6 (1.5) | 8.9 (1.6) | 8.6 (1.4) | 8.3 (1.4) | 9.0 (1.5) |
  Maternal SPM | 65.7 (23.8) | 55.3 (24.9) | 63.5 (8.1) | 67.6 (21.7) | 71.2 (20.9) |
  Distance (km) | 6.3 (4.1) | 0.7 (0.2) | 2.7 (1.5) | 7.2 (1.7) | 11.5 (0.9) |
  HOME | 5.5 (1.8) | 4.7 (1.6) | 5.6 (1.7) | 5.8 (1.6) | 5.8 (1.7) |