Table 2.

The weighted logistic regression on the prevalence of high blood lead in pregnant females.

	OR	95% CI	P
Age	0.999	(0.998–1.000)	0.064
Race/ethnicity
Non-Hispanic white	Reference
Non-Hispanic black	1.012	(0.992–1.031)	0.24
Mexican American	1.072	(1.032–1.112)	<0.001
Other Hispanic	1.007	(0.994–1.02)	0.323
Other races	1.107	(0.992–1.235)	0.07
Education
Below high school	Reference
High School	0.987	(0.956–1.019)	0.408
Above high school	0.988	(0.958–1.019)	0.448
PIR levels
<1.33	Reference
1.33–3.5	0.989	(0.965–1.014)	0.383
≥3.5	0.985	(0.954–1.018)	0.362
Year cycle	0.996	(0.993–0.999)	0.038

Weighted analysis was performed. OR, odds ratio; CI, confidence interval.