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The 2003-04 National Health and Nutrition Examination Survey (NHANES) was a collaborative effort involving 28 federal funding partners with the National Center for Health Statistics. The collaborators for the 2003-04 NHANES oral health component included the National Institute of Dental and Craniofacial Research and the National Center for Chronic Disease Prevention and Health Promotion, Division of Oral Health. Oral health data are available on 8272 persons aged 2 years or older. This report provides an overview of the 2003-04 oral health component including content descriptions and procedures for oral health assessments conducted for the first time in a national survey in the United States. These assessments include posterior functional contacts, tooth wear, and oral health-related quality of life. This report also provides evaluations of data quality in terms of examiner reliability statistics (percent agreements, kappas, and correlation coefficients) for various NHANES 2003-04 oral health examination components and analytical recommendations for producing 6-year estimates using the previous two NHANES data collection components (1999-2000 and 2001-02).

Overall, the data reliability analyses conducted for 2009-2010 indicate an acceptable level of data quality and that examiner (dental hygienist) performance in this data collection cycle is similar to prior survey periods since the NHANES continuous survey began in 1999.

The oral health component for the National Health and Nutrition Examination Survey (NHANES) was changed in 2005 from an examination conducted by dentists to an oral health screening conducted by health technologists rather than dental professionals. The oral health screening included a person-based assessment for dental caries, restorations, and sealants. This report provides oral health content information and presents results of data quality analyses that include dental examiner reliability statistics for data collected during NHANES 2005-08. Oral health data are available on 15,342 persons aged 5 years and older representing the civilian, noninstitutionalized population of the United States who participated in NHANES 2005-08. Overall, interrater reliability findings indicate that health technologist performance was excellent with concordance between examination teams and the survey reference examiner being almost perfect for a number of assessments. Concordance for dental caries and sealants (kappa statistics) between health technologists and the survey reference examiner ranged from 0.82 to 0.90 for the combined 4-year period. These findings support the use of health technologists in the assessment of person-based estimators of dental caries and sealant prevalence as part of an oral health surveillance system.