Figure 1. Age-related trends in blood lead levels (Canadian Health Measures Survey 2007-2009; U.S. National Health and Nutrition Examination Survey 2007-2008).
Bar chart showing geometric mean blood lead levels for various age groupings. Age 1 - 5 years taken from the U.S. NHANES survey is 1.5 micrograms per decilitre; and taken from the Canadian Health Measures Survey age 6 to 11 years is 12 to19 is 0.8 micrograms per decilitre; age 20 to 39 is 1.12 micrograms per decilitre; age 40 to 59 is 1.6 micrograms per decilitre; age 60 to 79 is 2.08 micrograms per decilitre.