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Table 3 Relation between water arsenic concentrations and combined endpoint of GDM or glucose intolerance (pooled), stratified by pre-pregnancy BMI

From: Maternal arsenic exposure and gestational diabetes and glucose intolerance in the New Hampshire birth cohort study

Pre-pregnancy BMI Non-cases Cases % Cases OR (95 % CI)
Underweight to Normal (<25) 388 32 8.2 0.9 (0.8, 1.2)
Overweight (25–29.99) 157 25 15.9 1.0 (0.8, 1.2)
Obese (≥30) 118 33 28.0 1.7 (1.0, 2.8)**
  1. Combined outcome variable was coded a dichotomous variable (0 = normal or 1 = GDM or intolerant). Models were adjusted for enrollment age, education, smoking during pregnancy, secondhand smoke exposure during pregnancy, weight gain and gestational week of glucose testing. Per 5 μg/L increase in water As; Represents the percent of total cases within each BMI category; **p <0.05