Table B1: Concentrations of lead in blood of children ages 5 and under,,,,,,

,Blood lead concentrations (µg/dL),,,,,
,1976-1980,1988-1991,1992-1994,1999-2000,2001-2002,2003-2004
50th percentile,15,3.5,2.6,2.2,1.6,1.6
90th percentile,25,9.4,7.1,4.8,4.2,3.9
"DATA: Centers for Disease Control and Prevention, National Center for Health Statistics, National Health and Nutrition Examination Survey",,,,,,

"Table B2. Median concentrations of lead in blood (µg/dL) of children ages 1-5, by race/ethnicity and family income, 2001-2004",,,,,,
,Blood lead concentrations (µg/dL),,,,,
Race / Ethnicity,All Incomes,< Poverty Level,100-200% of Poverty Level,> 200% of Poverty Level,>= Poverty Level,Unknown Income
All Races/Ethnicities,1.6,2.3,1.7,1.3,1.4,1.8
White Non-Hispanic,1.5,2.1,1.6,1.3,1.3,1.5
Black Non-Hispanic,2.5,2.9,2.2,1.9,2,2.3
Mexican-American,1.6,2,1.6,1.2,1.5,1.9
Other†,1.7,2.3,1.7,1.1,1.1,2.6

"DATA: Centers for Disease Control and Prevention, National Center for Health Statistics, National Health and Nutrition Examination Survey",,,,,,

"† ""Other"" includes Asian; Native American; Hispanic other than Mexican-American; those reporting multi-racial without specifying a main race other than Non-Hispanic Black, Non-Hispanic White, or Mexican-American; and those with a missing value for race/ethnicity.",,,,,,

"Addendum 1 to Table B2. 90th Percentile concentrations of lead in blood (µg/dL) of children ages 1-5, by race/ethnicity and family income, 2001-2004",,,,,,
,Blood lead concentrations (µg/dL),,,,,
Race / Ethnicity,All Incomes,< Poverty Level,100-200% of Poverty Level,> 200% of Poverty Level,>= Poverty Level,Unknown Income
All Races/Ethnicities,4,5.4,4.1,2.6,3.2,4.2
White Non-Hispanic,3.4,4.4,4,2.4,2.9,NA**
Black Non-Hispanic,6.4,7.7,5,4.1,4.8,10.2
Mexican-American,3.5,4,3.6,2.7,3.2,2.8
Other†,4.1,6.2,4.3,2.2,2.8,NA**

"DATA: Centers for Disease Control and Prevention, National Center for Health Statistics, National Health and Nutrition Examination Survey",,,,,,

"† ""Other"" includes Asian; Native American; Hispanic other than Mexican-American; those reporting multi-racial without specifying a main race other than Non-Hispanic Black, Non-Hispanic White, or Mexican-American; and those with a missing value for race/ethnicity.",,,,,,,

** Estimate is considered unreliable (relative standard error is greater than 40 percent).,,,,,,,

"Table B3: Distribution of concentrations of lead in blood of children ages 1-5, 1999-2002",,,,,,,
Blood lead concentrations (µg/dL),,,,,,,
 < 1, 1-2, 2-3 , 3-4 , 4-5 , 5-6, 6-7, > 7
13%,39%,23%,10%,5.00%,3.00%,2.00%,4.00%
"DATA: Centers for Disease Control and Prevention, National Center for Health Statistics, National Health and Nutrition Examination Survey",,,,,,,

"Table B4: Distribution of concentrations of mercury in blood of women of child-bearing age, 1999-2002",,,,,,,
Blood mercury concentrations (parts per billion),,,,,,,
 < 1, 1-2, 2-3 , 3-4 , 4-5 , 5-6, 6-7, > 7
52%,25%,9.00%,4.00%,3.00%,2.00%,2.00%,4.00%
"DATA: Centers for Disease Control and Prevention, National Center for Health Statistics, National Health and Nutrition Examination Survey",,,,,,,

"Addendum 1 to Table B4. Median concentrations of mercury in blood (ppb) of women of child-bearing age (16-49), by race/ethnicity and family income, 1999-2002",,,,,,
Race / Ethnicity,All,< Poverty Level,100-200% of Poverty Level,> 200% of Poverty Level,>= Poverty Level,Unknown Income
All Races/Ethnicities,0.9,0.7,0.7,1.1,1,1
White Non-Hispanic,0.9,0.6,0.5,1,0.9,0.9
Black Non-Hispanic,1.2,1,1.1,1.4,1.3,1.6
Mexican-American,0.8,0.7,0.8,0.9,0.9,0.8
Other†,1.1,0.9*,1,1.3,1.2,NA**

"DATA: Centers for Disease Control and Prevention, National Center for Health Statistics, National Health and Nutrition Examination Survey",,,,,,

"† ""Other"" includes Asian; Native American; Hispanic other than Mexican-American; those reporting multi-racial without specifying a main race other than Non-Hispanic Black, Non-Hispanic White, or Mexican-American; and those with a missing value for race/ethnicity.",,,,,,

* Estimate is unstable because it is based on a small number of persons (relative standard error is greater than 30 percent and less than 40 percent).,,,,,,

** Estimate is considered unreliable (relative standard error is greater than 40 percent).,,,,,,

"Addendum 2 to Table B4. 90th Percentile concentrations of mercury in blood (ppb) of women of child-bearing age (16-49), by race/ethnicity and family income, 1999-2002",,,,,,

Race / Ethnicity,All,< Poverty Level,100-200% of Poverty Level,> 200% of Poverty Level,>= Poverty Level,Unknown Income
All Races/Ethnicities,3.9,2.6,2.6,4.8,4.3,4.8
White Non-Hispanic,3.8,2.2,1.7,4.8,4.3,4.2
Black Non-Hispanic,3.9,2.6,3.6,4,3.9,5.6
Mexican-American,2.4,1.9,2.3,3.6,2.7,2.5
Other†,4.9,4,NA**,6.1,6.1,NA**

"DATA: Centers for Disease Control and Prevention, National Center for Health Statistics, National Health and Nutrition Examination Survey",,,,,,

"† ""Other"" includes Asian; Native American; Hispanic other than Mexican-American; those reporting multi-racial without specifying a main race other than Non-Hispanic Black, Non-Hispanic White, or Mexican-American; and those with a missing value for race/ethnicity.",,,,,,

** Estimate is considered unreliable (relative standard error is greater than 40 percent).,,,,,,

Table B5: Concentrations of cotinine in blood of children,,,,,,
,Serum cotinine concentrations (ng/mL),,,,,
,1988-1991,1999-2000,2001-2002,2003-2004,,
90th percentile,2.2,1.8,1.9,1.8,,
50th percentile,0.25,0.11,0.059,0.096,,
"DATA: Centers for Disease Control and Prevention, National Center for Health Statistics, National Health and Nutrition Examination Survey",,,,,,

"Addendum 1 to Table B5. Median concentrations of cotinine in blood (ng/mL) of children ages 3 to 17, by race/ethnicity and family income, 2001-2004",,,,,,

Race / Ethnicity,All,< Poverty Level,100-200% of Poverty Level,> 200% of Poverty Level,>= Poverty Level,Unknown Income

All Races/Ethnicities,0.077,0.32,0.14*,0.039,0.056,0.082*
White Non-Hispanic,0.075,0.75,NA**,0.039,0.057,NA**
Black Non-Hispanic,0.26,0.5,0.23,0.08,0.14,0.17*
Mexican-American,0.036,0.048,0.033,0.033,0.033,0.031
Other†,0.052,NA**,NA**,0.026,0.035,NA**
"DATA: Centers for Disease Control and Prevention, National Center for Health Statistics, National Health and Nutrition Examination Survey",,,,,,

NOTE: Based on children aged 3 to 17 with cotinine < 10 ng/mL.,,,,,,

"† ""Other"" includes Asian; Native American; Hispanic other than Mexican-American; those reporting multi-racial without specifying a main race other than Non-Hispanic Black, Non-Hispanic White, or Mexican-American; and those with a missing value for race/ethnicity.",,,,,,

* Estimate is unstable because it is based on a small number of persons (relative standard error is greater than 30 percent and less than 40 percent).,,,,,,

** Estimate is considered unreliable (relative standard error is greater than 40 percent).,,,,,,

"Addendum 2 to Table B5. 90th Percentile concentrations of cotinine in blood (ng/mL) of children ages 3 to 17, by race/ethnicity and family income, 2001-2004",,,,,,

Race / Ethnicity,All,< Poverty Level,100-200% of Poverty Level,> 200% of Poverty Level,>= Poverty Level,Unknown Income

All Races/Ethnicities,1.9,3.2,2.1,0.94,1.4,1.6*
White Non-Hispanic,2.2,4.6,3,1.1,1.7,1.7*
Black Non-Hispanic,2.1,2.6,1.9,1.1,1.5,1.6*
Mexican-American,0.51,0.83*,0.33,0.36,0.34,NA**
Other†,1.2,2.8*,1.3,0.33*,0.82,NA**

"DATA: Centers for Disease Control and Prevention, National Center for Health Statistics, National Health and Nutrition Examination Survey",,,,,,

NOTE: Based on children aged 3 to 17 with cotinine < 10 ng/mL.,,,,,,

"† ""Other"" includes Asian; Native American; Hispanic other than Mexican-American; those reporting multi-racial without specifying a main race other than Non-Hispanic Black, Non-Hispanic White, or Mexican-American; and those with a missing value for race/ethnicity.",,,,,,

* Estimate is unstable because it is based on a small number of persons (relative standard error is greater than 30 percent and less than 40 percent).,,,,,,

** Estimate is considered unreliable (relative standard error is greater than 40 percent).,,,,,,