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. Author manuscript; available in PMC: 2018 Nov 1.
Published in final edited form as: Lancet Public Health. 2017 Nov;2(11):e513–e521. doi: 10.1016/S2468-2667(17)30195-0

Figure 2. Geometric means (GMs) and geometric mean ratios (GMRs) and 95% confidence intervals (CIs) of urine dimethylarsinate (DMA) and total arsenic recalibrated to reflect non-dietary and non-smoking sources of arsenic stratified by 2-year NHANES cycle.

Figure 2

Squares and lines represent GMR estimates and 95% CIs. Recalibrated urine DMA and total arsenic were obtained from residuals regressing each log-transformed arsenic variable (DMA and total arsenic) on smoking status (never/ever/current), natural log-transformed arsenobetaine, and natural log-transformed intake of rice, cereals, juices, wine, chicken, and turkey in g/kg bodyweight/day (See Methods). Geometric means were further adjusted for age, race/ethnicity, education, and body mass index. P for trend was estimated by entering each NHANES 2-year cycle in the model as an ordinal variable.