Association of toenail arsenic concentration with total fat and alcohol in our case–control study population. The adjusted, ln-transformed toenail arsenic concentration (mean plus the residuals from the adjustment model described in the text) varies inversely with (A) total fat consumption (g/d) and (B) positively with ethanol consumption (g/d). The blue line in each panel represents the least squares regression between the predictor and response variable, and so differs slightly from the lines fit in the full general linear model.
Gruber et al. Nutrition Journal 2012 11:45 doi:10.1186/1475-2891-11-45