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Survey Items: POVLEVEL
Denominator: Households with children age 0-17 years
Numerator: 0-99% FPL; 100-199% FPL; 200-399% FPL; 400% FPL or more
Revisions and Changes: These items are the same as in the 2005/06 NS-CSHCN. These measures may be compared across surveys.
Additional Notes: The 2009/10 NS-CSHCN public data file provided by the National Center for Health Statistics (NSCH) includes a derived income variable, POVERTY_LEVELR which is missing values for 36,907 cases representing 18.8% of the sample. The code shown below uses POVERTY_LEVELR. Results for this variable differ from those shown on the DRC website because it is based on POVERTY_LEVELR, which does not include imputed values for missing income. To match DRC results, replace missing values with imputed values, refer to 2009/10 NS-CSHCN methodology report. Download the imputed income data file; select rows in which IMPUTATION=3 and link with the 2009/10 household file on IDNUMR, as instructed in the methods report. After merging POVLEVEL_I into the survey dataset, it will be possible to replace POVERTYLEVEL_R with POVLEVEL_I in the code below. Please note that income level estimates and confidence intervals based on single imputed income may differ slightly from those obtained using multiple imputation methods.
Treatment of Unknown Values: Unknown values (responses coded as 'refused', 'don't know', or system missing) are not included in the denominator when calculating prevalence estimates and weighted population counts displayed in the data query results table. In nearly every case, the proportion of unknown values is less than 1% and the exclusion of these values does not change the prevalence estimates (%) and only marginally affects the weighted population counts (Weighted Est.). Exceptions are noted in the form of a “Data Alert” at the bottom of a results table.
History and Development: The Maternal and Child Health Bureau leads the development of the NSCH survey and indicators, in collaboration with the National Center for Health Statistics (NCHS) and a national technical expert panel. The expert panel includes representatives from other federal agencies, state Title V leaders, family organizations, and child health researchers. Previously validated questions and scales are used when available. Respondents’ cognitive understanding of the survey questions is assessed during the pretest phase and revisions made as required. All final data components are verified by NCHS and DRC/CAHMI staff prior to public release.
C.I. = 95% Confidence Interval. Percentages and population estimates (Pop.Est.) are weighted to represent child population in US.
DATA ALERT: Household poverty level for the 18.8% of households in the sample with unknown values for income, household size, or both was calculated using single imputation methods. The poverty level estimates and confidence intervals based on single imputed poverty level may differ slightly from those obtained using multiple imputation methods.
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With funding and direction from the Maternal and Child Health Bureau, the National Survey of Children with Special Health Care Needs was conducted by the Centers for Disease Control and Prevention’s National Center for Health Statistics. CAHMI is responsible for the analyses, interpretations, presentations and conclusions included on this site.
Suggested citation format: National Survey of Children with Special Health Care Needs. NS-CSHCN 2009/10. Data query from the Child and Adolescent Health Measurement Initiative, Data Resource Center for Child and Adolescent Health website. Retrieved [mm/dd/yy] from [www.childhealthdata.org].