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TU-11.1 Data Details

TU-11.1 Reduce the proportion of children aged 3 to 11 years exposed to secondhand smoke Leading Health Indicators

Leading Health Indicators are a subset of Healthy People 2020 objectives selected to communicate high-priority health issues.

About the Data

Description of the data source, numerator, denominator, survey questions, and other relevant details about the national estimate.

National Data Source
National Health and Nutrition Examination Survey (NHANES); Centers for Disease Control and Prevention, National Center for Health Statistics (CDC/NCHS)
Changed Since the Healthy People 2020 Launch
Yes
Measure
percent 
Baseline (Year)
52.2 (2005-2008)
Target
47.0
Target-Setting Method
10 percent improvement
Numerator
Number of nonsmokers aged 3 to 11 years who had a serum cotinine level greater than or equal to 0.05 ng/mL and less than or equal to 10 ng/ml.
Denominator
Number of non-smokers aged 3 to 11 years.
Data Collection Frequency
Periodic
Comparable Healthy People 2010 Objective
Adapted from HP2010 objective
Leading Health Indicator
Environmental Quality
Methodology Notes

Children aged 3 to 11 years are classified as nonsmokers if they have a serum cotinine level less than or equal to 10ng/mL. The limit of detection used for cotinine is 0.05 ng/mL to be more consistent with other similar measures including indicators from Healthy People 2010 and the National Prevention Strategy. Using a lower level of detection of cotinine, may have allowed us to detect cotinine in persons who are currently categorized as ‘unexposed’.

According to the 2006 Surgeon General’s Report, more than 126 million nonsmoking Americans had detectable serum cotinine levels as of 1999–2002. Moreover, significant population disparities continue to exist and are in some cases widening. For example, children are more heavily exposed than nonsmoking adults.

Trend Issues
Two-year data are used as a placeholder to provide the latest data available and will be replaced with four-year data when available. Two-year and four-year data are not comparable. Two-year estimates are generally less stable and reliable than four-year estimates.
Changes Between HP2010 and HP2020
Since HP2010 the language of the objective has been modified from, 'Reduce the proportion of nonsmokers exposed to environmental tobacco smoke' to 'Reduce the proportion of nonsmokers exposed to secondhand smoke'. In HP2010 only one measure was calculated; the measure was for persons ages 4 and older. In HP2020 we have three objectives--ages 3-11, 12-17, and 18+. The HP2010 measure did not use an upper limit for non-smokers cotinine levels. The HP2020 measure is using an upper limit of 10ng/mL. Persons with cotinine levels greater than 10 ng/mL could have been counted as exposed non-smokers in the HP2010 measure, but in the HP2020 measure these persons are considered to be smokers.

Revision History

Any change to the objective text, baseline, target, target-setting method or data source since the Healthy People 2020 launch.

Description of Changes Since the Healthy People 2020 Launch

The limit of detection for cotinine used for the baseline at launch was 0.015ng/mL. The measure was revised in 2011 to use a limit of detection for cotinine of 0.05ng/mL, to be more consistent with similar measures including indicators from Healthy People 2010 and the National Prevention Strategy. As a result of this change, the original baseline was revised from 82.2% to 52.2%. The target was adjusted from 74.0% to 47.0% to reflect the revised baseline using the original target-setting method.

References

Additional resources about the objective.

  1. U.S. Department of Health and Human Services. The Health Consequences of Involuntary Exposure to Tobacco Smoke: A Report of the Surgeon General. U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, National Center for Chronic Disease Prevention and Health Promotion, Office on Smoking and Health, 2006.