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National Health and Nutrition Examination Survey (NHANES) : respiratory health spirometry procedures manual
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January 2011
[PDF-1.28 MB]
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Description:Spirometry, which means “the measuring of breath,” is a routinely used pulmonary function test (PFT) that measures the amount and speed of air that a person can inhale and exhale. Results from the test can be used to estimate lung function and aid in the diagnosis of certain respiratory disorders. The current NHANES spirometry component is sponsored by the Centers for Disease Control and Prevention, National Institute for Health Statistics (CDC/NCHS), the National Heart, Lung, and Blood Institute (NHLBI), and the National Institute for Occupational Safety and Health (NIOSH). The objective of the 2007-8 spirometry data collection cycle is to assess the prevalence of asthma and adult chronic obstructive pulmonary disease (COPD) in the U.S. population. The data will also be used to produce updated spirometric reference data for the general population. Moreover, comparisons of 2007-8 data with that of previous studies will illuminate trends in asthma and COPD prevalence over time in the United States.
Prior to the current survey, NHANES III (1988-1994) also included a spirometry component. These spirometry data were used to generate age, gender, and race/ethnicity specific prediction equations for normal spirometric values. These reference standards have been widely used in research relating to occupational pulmonary disease, the effects of air quality on spirometric function, and in particular the relationship of smoking to COPD. The data from the NHANES III survey have been used also in evaluation of asthma and COPD prevalence and their risk factors in the general U.S. population.
All sample persons (SPs) aged 6-79 years will be eligible to participate in the spirometry component. The procedures are based on the current standards for pulmonary function, equipment, testing, and interpretation set by the American Thoracic Society (ATS). Spirometry training is required for all health technologists and will be provided by NIOSH.
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