Centers for Disease Control and PreventionNational Center for Health Statistics

Tour of the Website

Tatiana Louis, MS

National Center for Health Statistics

A brief history of health examination surveys

National Health Examination Survey: The Beginning

– July 3, 1956 ---- National Health Survey Act authorizing a continuous survey to provide statistical data on the amount, distribution, and effects of illness and disability in the U.S.

– Established a Health Interview Survey with periodic “special surveys” based on health examinations (the “Health Examination Survey”)

– Also proposed health records survey

National Health Examination Survey: From an Idea to a

Reality

– Planning during 1957 and 1958– Decision to use mobile examination centers– Three pilots in 1958 and 1959– Survey begins in October 1959– NCHS formed in 1960

National Health (and Nutrition)Examination Surveys

NHES I 1960-62 18-79 yearsNHES IINHES II 1963-651963-65 6-11 years6-11 yearsNHES IIINHES III 1966-701966-70 12-17 years12-17 yearsNHANES INHANES I 1971-751971-75 1-74 years1-74 yearsNHANES IINHANES II 1976-801976-80 6 mo.-74 years6 mo.-74 yearsHHANESHHANES 1982-841982-84 6 mo.-74 years 6 mo.-74 yearsNHANES IIINHANES III 1988-941988-94 2 mo. +2 mo. +NHANESNHANES 1999-1999- All agesAll ages

Survey Dates Ages

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National Health Examination Survey (NHES I): Staffing

– Two mobile examination centers (MEC) in operation

– MEC staff -- doctor, dentist, x-ray tech and interviewer

– Household interviewers and other staff to schedule examinations

NHANES Mobile Exam Center

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NHANES mobile examination centers

• Standard environment

• Standard equipment

• Standard specimen collection

• Standard staff procedures

• Automated data collection

• Minimal site-specific error

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National Health and NutritionExamination Surveys

NHES I 1960-62 18-79 yearsNHES II 1963-65 6-11 yearsNHES III 1966-70 12-17 yearsNHANES I 1971-75 1-74 yearsNHANES II 1976-80 6 mo.-74 yearsHHANES 1982-84 6 mo.-74 yearsNHANES III 1988-94 2 mo. +NHANES 1999- All ages

Survey Dates Ages

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National Health and NutritionExamination Surveys

NHES I 1960-62 18-79 yearsNHES II 1963-65 6-11 yearsNHES III 1966-70 12-17 yearsNHANES I 1971-75 1-74 yearsNHANES II 1976-80 6 mo.-74 yearsHHANES 1982-84 6 mo.-74 yearsNHANES III 1988-94 2 mo. +NHANES 1999- All ages

Survey Dates Ages

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NHANES Becomes A Continuous Survey

National Health and NutritionExamination Surveys

NHES I 1960-62 18-79 yearsNHES II 1963-65 6-11 yearsNHES III 1966-70 12-17 yearsNHANES I 1971-75 1-74 yearsNHANES II 1976-80 6 mo.-74 yearsHHANES 1982-84 6 mo.-74 yearsNHANES III 1988-94 2 mo. +NHANES 1999- All ages

Survey Dates Ages

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NHANES Interviewing staff

• Interviewers (27)• Field Offices (3)• Office staff (5)

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NHANES Mobile Examination Center

(MEC)staff

• Physician• Dietary interviewers (2)• Private health interviewers (2)• Health technicians (4)• Phlebotomist (1)• Manager• Coordinator

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• Estimate the prevalence of health conditions and risk behaviors

• Describe awareness, treatment and control of selected diseases

• Study the relationship of diet and health

• Monitor trends over time

Goals of NHANES

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OBJECTIVES

• Overview of our NEW website

• How to locate pertinent information on the existing website

• How to locate current and historic NHANES datasets

• Download the Analytic Guidelines

Most updated version

Other related links

Other related links

SUMMARY

• Information on current and past NHANES survey

• Download codebooks, documentation and data

• Find survey questionnaires, manuals, and exam components

• Download the ANALYTIC GUIDELINES

• Contact us

www.cdc.gov/nchs/nhanes.htm

U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICESCenters for Disease Control and PreventionNational Center for Health Statistics