Overview and quality assurance for the oral health component of the National Health and Nutrition Examination Survey (NHANES), 2011-2014.

During 2011-2014, results overall indicate a high level of data quality and substantial examiner reliability for tooth count and dentition; reliability for periodontal disease, across various assessments, was at least moderate. When comparing the 2011-2014 examiner performance to findings from 2003 to 2004, comparable concordance between the examiners and the reference examiner exists.