Table 3.

Associations ^a between gestational mean atrazine concentrations in drinking water and SGA, term LBW, VLBW, PTB, and VPTB in AMP communities (n = 22) in Ohio, 2006–2008.

Outcome	Model	n	OR g (95% CI)
SGA b	Crude	13,942	0.99 (0.88, 1.12)
	Adjusted	13,942	1.06 (0.96, 1.17)
Term LBW c	Crude	12,567	1.15 (1.01, 1.31)
	Adjusted	12,567	1.27 (1.10, 1.45)
VLWB d	Crude	14,089	0.90 (0.50, 1.60)
	Adjusted	14,089	0.81 (0.47, 1.39)
PTB e	Crude	14,098	1.01 (0.89, 1.14)
	Adjusted	14,098	0.99 (0.88, 1.11)
VPTB f	Crude	14,349	1.15 (0.86, 1.55)
	Adjusted	14,349	1.11 (0.81, 1.51)

^a All adjusted models included maternal race/ethnicity, maternal age, and birth year a priori. ^b Small for gestational age defined as the smallest 10% of infants, according to birth weight, at each gestational age in the population. In addition to a priori variables, the final model for SGA included maternal education, WIC status, marital status, maternal pre-pregnancy BMI. ^c Term low birth weight is defined as < 2500 g among term births (≥ 37 weeks gestation). In addition to a priori variables, the final model for term LBW included infant sex, maternal education, WIC status, marital status, maternal smoking status, and maternal pre-pregnancy BMI. ^d Very low birth weight is defined as < 1500 g at time of delivery. In addition to a priori variables, the final model for term LBW included maternal education, marital status, and parity. ^e Preterm births defined as infants delivered before 37 weeks gestation. In addition to a priori variables, the final model for PTB included maternal education, maternal smoking status, and parity. ^f Very preterm births defined as infants delivered before 32 weeks gestation. In addition to a priori variables, the final model for PTB included maternal marital status. ^g Odds ratios reflect increase in odds per 1 µg/L increase in atrazine in drinking water.