The total number of participants in NHANES 2005–2010 with complete data on age, sex, and race was 31,034. The number of participants aged <6 and ≥20 was 22,759, leaving 8,275 participants aged 6 to 19 eligible for our study. Of these, 359 participants had incomplete data on use of dental sealants. Of the 7,916 participants aged 6 to 19, there were 511 with incomplete data for poverty index. Eligible participants with complete poverty index data numbered 7,405, of whom 238 had incomplete data for education level of head of household. Of the 7,167 remaining participants, 74 had incomplete data for health insurance status. One of the 7,093 participants had incomplete data for child’s general health, leaving 7,092. Two of these participants had incomplete data for child’s usual source of routine care, leaving 7,090 participants.

Figure 1. Selected study population of participants for substudy on prevalence of dental sealants among children and adolescents aged 6 to 19 years, National Health and Nutrition Examination Survey, 2005–2010.

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Sealant prevalence was higher for children whose parents were high school graduates compared with children whose parents were not high school graduates and for children whose parents had higher than high school education compared with children whose parents were not high school graduates for family income 100% to 200% of the FPL (P = .05), and sealant prevalence was higher for children whose parents had higher than high school education compared with children whose parents were not high school graduates for family income greater than 200% of the FPL (P = .002).

Figure 2. Adjusted sealant prevalence by education and family income, National Health and Nutrition Examination Survey (NHANES), 2005–2010. Abbreviations: FPL, federal poverty level; HS, high school graduate.

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