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. Author manuscript; available in PMC: 2018 Jul 1.
Published in final edited form as: Food Chem Toxicol. 2017 May 4;105:387–397. doi: 10.1016/j.fct.2017.05.004

Table 2.

Summary of Principal Components for Arsenic Species and Calorie-Adjusted Nutrition Variables

As Metabolism PC1 As Metabolism PC2 OCM PC1 OCM PC3 OCM PC3 OCM PC4
Variance explained (%) 84.6 15.4 60.1 22.7 10.3 6.9
Standard deviation 1.59 0.68 1.55 0.95 0.64 0.52
Weights for iAs% −0.55 −0.73 -- -- -- --
Weight for MMA% −0.56 0.69 -- -- -- --
Weight for DMA% 0.63 −0.03 -- -- -- --
Weight for Vitamin B2 -- -- 0.57 0.13 0.47 −0.66
Weight for Vitamin B6 -- -- 0.53 −0.26 −0.79 −0.16
Weight for Folate -- -- 0.52 −0.46 0.37 0.62
Weight for Vitamin B12 -- -- 0.36 0.84 −0.12 0.39

As, arsenic; PC, principal component; OCM, one-carbon metabolism