|
Blood lead concentrations (range, μg/dℓ)
|
Crude OR (95 % CI)
|
p-value
|
Adjusted OR (95 % CI)a
|
p-value
|
|---|
|
Total concentration (0.18–5.35)
|
1.69 (1.19–2.41)
|
0.004
|
1.60 (1.04–2.45)
|
0.03
|
|
Quartile
|
|
1st (0.18–1.12)
|
Reference
| |
Reference
| |
|
2nd (1.13–1.71)
|
1.38 (0.65–2.90)
|
0.40
|
1.26 (0.56–2.84)
|
0.39
|
|
3rd (1.72–2.29)
|
1.20 (0.57–2.52)
|
0.63
|
1.26 (0.55–2.87)
|
0.61
|
|
4th (2.30–5.35)
|
2.96 (1.38–6.35)
|
0.005
|
2.54 (1.09–5.94)
|
0.03
|
- OR odds ratio, CI confidence interval
- aAdjusted for sex, age, gestational age, birth weight, economic status, parental education, and parents’ smoking behavior
