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. 2019 Oct 2;2(10):e1912343. doi: 10.1001/jamanetworkopen.2019.12343

Figure 2. Smooth Plots of Maternal Red Blood Cell (RBC) Lead Levels and Child Body Mass Index (BMI) z Scores Stratified by Maternal Folate Status.

Figure 2.

Crude association between maternal RBC lead concentration and offspring BMI z scores stratified by maternal folate status (low vs adequate level) among non–overweight or obese (non-OWO) mothers (A) and OWO mothers (B).Because of the small sample size, the curves are truncated at 16 μg/L (n = 6) (A) and at 16 μg/L (n = 8) (B). The curves were derived from smoothing plots generated using the PROC LOESS step in SAS statistical software (version 9.4; SAS Institute Inc). To convert lead level to micromoles per liter, multiply by 0.0483.