Table 6.
Crude and adjusted odds ratios for LBW at full term and road proximity.
| Measure | No. of LBW cases (% of total subjects) | Crude OR (95% CI) | Adjusteda OR (95% CI) |
|---|---|---|---|
| < 150 m highwayb or < 50 major roadc | 169 (0.25) | 1.03 (0.87–1.22) | 0.99 (0.84–1.18) |
| < 50 m highway | 24 (0.04) | 1.37 (0.91–2.07) | 1.28 (0.85–1.93) |
| 50–150 m highway | 55 (0.08) | 1.05 (0.80–1.39) | 1.01 (0.77–1.33) |
| < 50 m major road | 100 (0.15) | 1.00 (0.81–1.24) | 0.99 (0.80–1.22) |
| 50–150 m major road | 184 (0.28) | 0.95 (0.81–1.12) | 0.94 (0.80–1.10) |
a
Adjusted for infant sex, First Nations status, parity, maternal age, maternal smoking during pregnancy, month–year of birth, income (quintile-census), maternal education (quartile-census).
b
DMTI type 1 and 2 road (expressway: 114,000 vehicles/day; principal highway: 21,000 vehicles/day).
c
DMTI type 3 and 4 road (secondary highway: 18,000 vehicles/day; major road: 15,000 vehicles/day).