Figure 4: Prevalence of Blood Lead Levels ≥ 10 mcg/dL Among Children Under Age Six Years; 1998 to 2007 Blood Lead Test Data, New York State Excluding New York City
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Figure 4 shows the total number and rate of BLLs ≥ 10 mcg/dL among children under age six years for each year between 1998 and 2007. In 2007, a total of 2,947 children had BLLs ≥ 10 mcg/dL, corresponding to a prevalence rate of 14.0 per 1,000 children tested (1.4 percent of children tested). These measures include children who were newly identified with EBLLs in each of these years as well as those who were first identified with EBLLs in previous years and continued to have EBLLs on follow up testing during the year assessed. Because prevalence data include both incident and follow-up cases, they are higher than incident data for the same year shown in Figure 3.
Trend data show the dramatic improvement since 1998 in both the number and rate of children identified with prevalent BLLs ≥ 10 mcg/dL. The total number of children with BLLs ≥ 10 mcg/dL declined 71.0 percent between 1998 and 2007, from 10,155 children in 1998 to 2,947 children in 2007. The prevalence rate declined 73.7 percent over the same period, from 53.3 per 1,000 children tested in 1998 to 14.0 per 1,000 children tested in 2007.
|Year of Test||Children with prevalent blood lead levels||Rate per 1,000 children tested1|
- Incidence Rate: Total number of children under age six years identified for the first time with confirmed BLLs ≥ 10 mcg/dL divided by the total number of children under age six that had lead tests in that given year, multiplied by 1,000.