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Survey Items:
Denominator: Children age 6 months-5 years
Numerator: Never breastfed; Exclusively breastfed or fed breast milk for the first six months; Breast fed or fed breast milk but not exclusively during the first six months; Exclusivity is not known
Revisions and Changes: This content is new in 2007.
Additional Notes: Four questions are used to construct this indicator: whether the child was ever breastfed or fed breast milk (K6Q40), age at which breastfeeding stopped (K6Q41), age at which formula was introduced (K6Q42), and age at which anything other than breast milk was introduced (K6Q43). To qualify as having been exclusively breastfed for six months, children must meet all of the following: be at least six months old, did not stop breastfeeding before six months of age, and not introduced to formula or anything other than breast milk (including juice, cow's milk, sugar water, baby food, or anything else, even water) until at least six months old. Section 6 questions were asked only for children less than 6 years old.
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.
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C.I. = 95% Confidence Interval. Percentages and population estimates (Pop.Est.) are weighted to represent child population in US.
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With funding and direction from the Maternal and Child Health Bureau, the National Survey of Children’s Health 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's Health. NSCH 2007. 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.