Associations between Model A and selected health endpoints. Effect estimates are shown as percent change per one standard deviation change in the source factors. Lines indicate the 95% confidence interval. Symbols represent the different factors: rectangle = "crustal", triangle = "steel wear", diamond = "gasoline" and circle = "speed-change". Fig 2A: blood endpoints. *) The estimates for MCV were multiplied by ten to better fit the scale. Fig 2B: cardiac endpoints.