Table 4.

Determinants of PbB levels above the median after χ² and MLR test.

	PbS < 0.9 μg/dL	PbS ≥ 0.9 μg/dL	OR (95% CI)	p-Value
	n (%)	n (%)
Education
≤High school	26 (44.8)	32 (55.2)	Ref.
≥Elementary school	33 (55.9)	26 (44.1)	0.59 (0.24–1.45)	0.245
Waste burning
No	46 (53.5)	40 (46.5)	Ref.
Yes	13 (41.9)	18 (58.1)	2.06 (0.76–5.58)	0.153
First parity
Yes	31 (63.3)	18 (36.7)	Ref.
No	28 (41.2)	40 (58.8)	2.49 (1.02–6.07)	0.045

Adjusted for BMI, municipality, age, gestational age, education.