National Center for Health Statistics National Health and Nutrition Examination Survey OP96S002
National Health and Nutrition Examination Survey (NHANES) Objective To assess the health and nutritional status of adults and children in the United States OP96S022
National Health and Nutrition Examination Surveys NHES I years NHES II years NHES III years NHANES I years NHANES II mo.-74 years HHANES mo.-74 years NHANES III mo. + NHANES1999-All ages SurveyDatesAges OP96S025
NHANES topics Cardiovascular disease Diabetes, lower extremity disease Bone status, osteoporosis Oral health Vision Hearing and balance Fitness and strength OP96S035
NHANES topics Nutrition Anthropometry Mental health Risk behaviors Reproductive health Environmental exposures Infectious diseases OP96S036
NHANES survey methods Eligible population Civilian, non-institutionalized household population All states and D.C. All ages OP96S030
NHANES sample design Oversample African Americans Mexican Americans Adolescents aged Older persons aged 60+ Pregnant women Low income whites OP96S031
Stage 4 SPs Stage 1 Counties Stage 2 Segments Stage 3 Households OP96S017
NHANES information flow Advance letter Screening In-home interview Exam Biologic Specimens LabNCHSParticipant Informed consent OP96S032
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Pentop handheld computer Field interviews OP96S038
NHANES Mobile Exam Center OP96S041
NHANES mobile examination centers Standard environment Standard equipment Standard specimen collection Standard staff procedures Automated data collection Minimal site-specific error OP96S043
NHANES Mobile Examination Center (MEC)staff Physician Dentist Dietary interviewers (2) Private health interviewers (2) Health technicians (3) Phlebotomist (1) Manager Coordinator OP96S046
Health Examination Exam duration 1-4 hours Remuneration $100 Several examinations, private health interviews Participants receive exam findings OP96S053
On day of examPreliminary report of findings; referrals 1-2 weeksNotification of abnormal values - (letter sent by mail) NHANES report of findings Time after examReport OP96S047
4 weeksSexually transmitted disease test reporting (self-initiated telephone reporting, toll-free line) weeksFinal report of findings (sent by mail) NHANES report of findings Time after examReport OP96S048
NHANES key response rates Current total Interviewed MEC examined Percent
ISIS architecture h i Household interviews Westat home office T1 NCHS Labs & graders T1 MEC 64kb Field office National Frame Relay Network OP96S049
Data release process QA/QC Editing/cleanup Weighting Data preparation Documentation Confidentiality review OP96S053
NHANES data dissemination Public use files NHANES available on internet as of June 21, 2002 Plan for release in 2004 and release in 2006 OP96S054
NHANES web site OP96S058
Reports and Data Briefs 1999 NHANES Blood and hair mercury levels Blood lead levels Folate status in women Prevalence of overweight National report on human exposures to environmental chemicals OP96S053