Table 6.
Prenatal blood lead |
Prenatal blood cadmium |
Prenatal blood mercury |
||||||
---|---|---|---|---|---|---|---|---|
OR (95% CI) | p | OR (95% CI) | p | OR (95% CI) | p | |||
Balance | Heel to toe: ref 15 steps (vs 1–14): ref Q1 | Q4 | 1.06 (0.81, 1.39) | 0.691 | 0.83 (0.61, 1.12) | 0.224 | 1.05 (0.79, 1.39) | 0.718 |
Ball skills | Beanbag: ref 4–10 throws (vs 1–3): ref Q1 | Q4 | 0.92 (0.70, 1.21) | 0.535 | 0.99 (0.72, 1.35) | 0.939 | 1.13 (0.85, 1.49) | 0.410 |
Manual dexterity | Threading lace: ref 9–21 s (vs 22–105): ref Q1 | Q4 | 0.93 (0.70, 1.24) | 0.634 | 0.95 (0.69, 1.30) | 0.946 | 1.21 (0.90, 1.61) | 0.206 |
Peg board | ||||||||
Preferred hand: ref 15–22 s (vs 23–46): ref Q1 | Q4 | 1.23 (0.94, 1.63) | 0.138 | 1.04 (0.76, 1.42) | 0.915 | 1.11 (0.84, 1.48) | 0.460 | |
Non-preferred hand: ref 15–25 (vs 25–62 s): ref Q1 | Q4 | 1.04 (0.79, 1.36) | 0.792 | 1.06 (0.78, 1.45) | 0.721 | 0.78 (0.59, 1.03) | 0.083 |
Reference categories: lead < 5 µg/dl, cadmium < 0.25 µg/l, mercury < 2.00 µg/l.
Participants with poor attention excluded.
Adjusted for: sex, maternal education, smoking in pregnancy, alcohol in pregnancy, maternal age and parity.