Maternal and fetal exposures to fluoride during mid-gestation among pregnant women in northern California

Table 4 Adjusted and unadjusted linear associations of 0.1 mg/L increase in community water fluoride concentrations with fluoride concentrations in maternal urine, serum, and amniotic fluid

	Relationship with community water fluoride
Fluoride concentrations	Unadjusted (95% CI)	Adjusted^a (95% CI)
Maternal urine	0.037 (0.006, 0.069)	0.052 (0.019, 0.085)
Maternal urine adjusted for specific gravity	0.026 (-0.004, 0.057)	0.028 (-0.006, 0.062)
Maternal serum	0.001 (0.000, 0.003)	0.001 (0.000, 0.003)
Amniotic fluid	0.001 (0.000, 0.002)	0.001 (0.000, 0.002)

^a Adjusted for maternal age, smoking status, BMI race/ethnicity, and gestational age at sample collection. Likelihood ratio tests indicated no significant differences between the adjusted and non adjusted models

ISSN: 1476-069X