Multiple logistic (SGA) and linear (birth weight) regression analyses.

N = number of subjects; CI = Confidence Interval; SGA = Small for Gestational Age; As = Arsenic; ↑ = increase with interquartile range; vs. = versus. aInterpretation of the estimate: for SGA: the odds of having SGA is multiplied with the estimate ( = the odds ratio); for birth weight: the estimate is the increase/decrease in weight.