Skip directly to search Skip directly to A to Z list Skip directly to navigation Skip directly to page options Skip directly to site content

Home Indicators Available on the Tracking Network

Indicators

Click on an indicator to read more about it.

Blood Lead Levels by Birth Cohort

This indicator uses data collected by state and local childhood lead poisoning prevention programs. It provides information about blood lead testing and blood lead levels (BLL) among children born in the same year, known as a birth cohort. The number of children tested with blood lead levels higher than10 µg/dL cannot be interpreted as prevalence or incidence for the population. Some states require all children to be tested (universal testing) while others only require at-risk children to be tested (targeted testing). State-to-state comparisons must be made cautiously because of differences in testing policies. This information can be used to identify and monitor temporal and spatial changes in BLL testing and BLLs by birth cohort.

Blood Lead Testing

This indicator uses data collected by state and local childhood lead poisoning prevention programs. It provides information about blood lead testing among children born in the same year, known as a birth cohort. In addition, this indicator uses census data to provide information about the number of homes built before 1950 and the poverty level in a specific area. Having all of this information together helps assess testing within areas of high risk pre-1950s homes and areas where poverty have been identified as risk factors for elevated blood lead levels in children. However, the following limitations to these data are important to note: testing policies differ by state; census data do not account for the number of pre-1950s houses that have been renovated or have had lead removed; and this indicator does not consider other sources of lead in the community.

Annual Blood Lead Levels

This indicator provides information on the number of children tested each year and the number of those children tested with confirmed blood lead levels (BLLs) higher than 10 µg/dL. This information is used to direct resources for testing and management of elevated cases and can be used with environmental or risk factor data to monitor trends over time. The data are used to better understand and interpret BLL surveillance data, compare testing and BLLs within and across the states, and monitor progress towards eliminating BLLs higher than 5 µg/dL. However, limitations to the data include:

  • The analysis uses the county of the child's residence at the time of the test, which may be different from the county where the child was exposed to lead.
  • The number and percent of BLLs through surveillance data cannot be interpreted as prevalence or incidence for the population as a whole.
  • Counties are not the same with respect to the distribution of lead hazards or risk factors for lead exposure.

Experts now use a new reference level to define elevated BLL which is 5 µg/dL. This is based on the U.S. population of children ages 1-5 years who are in the top 2.5% of children when tested for lead in their blood.

Carbon Monoxide Poisoning Hospitalizations

This indicator shows the number of people who were admitted to the hospital due to carbon monoxide (CO) exposure. These data come from hospital records, but recording a cause of injury in hospital admission or discharge records is not required in all states. This limits the ability to compare data across states. Additionally, these data include CO exposures which may or may not have occurred in a home environment. However, these data can be used to assess the burden of severe CO poisoning, monitor trends over time, identify high-risk groups, and enhance prevention, education, and evaluation efforts.

Carbon Monoxide Poisoning Emergency Department Visits

This indicator shows the number of patients seen in an emergency department for carbon monoxide poisoning. These patients may have health effects ranging from very minor to very serious. These data come from hospital records, but recording a cause of injury in hospital admission or discharge records is not required in all states. This limits the ability to compare data across states. Additionally, these data include CO exposures which may or may not have occurred in a home environment. These data can be used to assess the burden of CO poisoning and to monitor trends over time, identify high-risk groups, and enhance prevention, education, and evaluation efforts.

Carbon Monoxide Poisoning Mortality

This indicator tracks the number of people who died because they were exposed to CO unintentionally. Death investigation laws and reporting vary by place. This limits the ability to compare data across locations but, these data can be used to assess the burden of severe CO poisoning, monitor trends over time, and enhance prevention, education, and evaluation efforts.

Search Housing Data

Submit request
 Top of Page
TOP