Figure 9: Summary Trends in the Number of Incident Cases Among Children Under Age Six Years by Blood Lead Level Category; 1998 to 2007 Blood Lead Test Data1, New York State Excluding New York City

Figures 9 and 10 summarize trends in the incidence of lead poisoning among children under age six years for the years 1998 - 2007, by BLL categories (10 – 14 mcg/dL, 15 – 19 mcg/dL, and ≥ 20 mcg/dL). These summary analyses compare the relative contribution of each BLL category for each year and over time.

Figure 9 shows the total number of incident cases for each of the three BLL categories defined for the years 1998 - 2007. Figure 10 shows the incidence rate for each of the three BLL categories defined for the years 1998 - 2007. Both the total number of children and the proportion of children tested for lead and newly identified with confirmed EBLLs steadily declined across all BLL categories during this time period. The total number of children newly identified with BLLs ≥ 10 mcg/dL declined 63.4 percent between 1998 and 2007, from 5,198 children in 1998 to 1,901 children in 2007. The incidence rate declined 68.3 percent over the same period, from 29.0 per 1,000 children tested in 1998 to 9.2 per 1,000 children tested in 2007.

Year of Test Cases 10-14 mcg/dL Cases 15-19 mcg/dL Cases ≥20 mcg/dL
1998 3,415 1,070 713
1999 2,917 819 568
2000 2,311 687 521
2001 2,113 660 429
2002 1,989 576 410
2003 1,655 564 393
2004 1,698 509 387
2005 1,497 460 326
2006 1,328 448 322
2007 1,216 394 291

Footnotes

  1. Total number of children under age six years identified for the first time with confirmed elevated blood lead levels in that given year and blood lead level category.