National Health and Nutrition Examination Survey (NHANES) : tuberculosis skin test procedures manual
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National Health and Nutrition Examination Survey (NHANES) : tuberculosis skin test procedures manual

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    • Alternative Title:
      Tuberculosis skin test procedures manual
    • Description:
      The National Health Survey Act, passed in 1956, provided the legislative authorization for a continuing survey to provide current statistical data on the amount, distribution, and effects of illness and disability in the United States. To fulfill the purposes of this act, it was recognized that a data collection effort needed to be implemented that would involve at least three sources: (1) the people themselves by direct interview; (2) clinical tests, measurements, and physical examinations on sample persons; and (3) places where persons received medical care such as hospitals, clinics, and doctors’ offices.

      The NHANES surveys were created to fulfill this information need. They are unique in that interview and physical examination data are obtained from national samples of the U.S. population. The examination component is conducted in mobile examination centers (MECs) that travel to fifteen survey locations per year. NHANES data have been the cornerstone for numerous national health and nutrition policy and surveillance activities.

      Each year, a nationally representative sample of the civilian, non-institutionalized U.S. population, all ages, is interviewed and examined. Selected persons are invited to take part in the survey by being interviewed in their homes. Household interview data is collected via computer-assisted personal interviewing (CAPI) and includes demographic, socioeconomic, dietary, and health-related questions. Upon completion of the interview, sample persons are asked to participate in a physical examination. The examination will be conducted in a specially equipped and designed Mobile Examination Center (MEC), consisting of four trailers. The MEC houses all of the state-of-the-art equipment for the physical exam and the tests conducted. The trailers are divided into rooms to ensure the privacy of each study participant during the examination and interview. This examination includes a physical examination conducted by a physician and laboratory tests, X-rays, and other health measurements and interviews conducted by highly trained medical personnel. The Centers for Disease Control and Prevention (CDC), Division of Tuberculosis (TB) Elimination, is responsible for the TB skin-testing component of NHANES. The objective is to determine the prevalence of TB infection in the U.S. population. All sample persons (SPs) aged 6 years or older are offered testing for infection with the bacterium that causes TB.

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