Statistical analyses
Pearson’s correlation coefficients (Additional general linear models were run for all offspring outcomes, including both maternal predictors (i.e., peak UIC and TSH levels) and their interaction term. If the latter was statistically significant, the interaction between the two predictors and a given outcome was illustrated with a contour plot.Peak UIC levels were log-transformed to approximate a normal distribution. Statistical analyses were run using SAS v9.4 (SAS Institute, Cary, NC, USA). All statistical tests were two-tailed, with significance set at p<0.05.