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National Health Interview Survey
The National Health Interview Survey (NHIS) is an annual, cross-sectional survey intended to provide nationally representative estimates on a wide range of health status and utilization measures among the nonmilitary, noninstitutionalized population of the United States. Each annual data set can be used to examine the disease burden and access to care that individuals and families are currently experiencing in the United States.
NHIS is designed by the CDC's National Center for Health Statistics (NCHS) – the government agency tasked to monitor the population's health status and behavior – and administered by the U.S. Census Bureau.〔http://www.cdc.gov/nchs/data/nhis/brochure2010January.pdf〕 NHIS has been administered since 1957, although the core content and questionnaires undergo major revisions every 10–15 years. NHIS allows both governmental and outside researchers to obtain estimates on a variety of health-related topics among either the entire nation or specific demographic groups of the population. Also, since the survey design is cross-sectional rather than longitudinal, health information can be trended for demographic groups and the country as a whole, but not for individuals or families.
== History ==
Authorized by the (National Health Survey Act ) of 1956,〔http://www.cdc.gov/nchs/data/series/sr_01/sr01_011acc.pdf〕 the U.S. Public Health Service was tasked with implementing an annual survey to collect information on morbidities – physical or mental conditions related to any illness or injury – and medical service and medical facility utilization. The most recent re-design of the survey questionnaire was implemented in 1997.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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