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Activity Number:
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474
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Type:
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Contributed
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Date/Time:
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Thursday, August 7, 2008 : 8:30 AM to 10:20 AM
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Sponsor:
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Section on Survey Research Methods
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| Abstract - #302097 |
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Title:
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Relating Self-report and Accelerometer Physical Activity with Application to NHANES 2003-2004
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Author(s):
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Nicholas Beyler*+ and Sarah Nusser and Gregory Welk
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Companies:
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Iowa State University and Iowa State University and Iowa State University
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Address:
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, Ames, IA, 50011,
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Keywords:
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Physical Activity ; NHANES ; Measurement Error
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Abstract:
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A measure of physical activity is time spent in moderate to vigorous physical activity (MVPA). Daily or weekly estimates of MVPA can be obtained with self-reports (e.g., recalls and questionnaires) and/or with monitoring devices (e.g., accelerometers). Self-reports are inexpensive in survey settings but estimate MVPA with considerable measurement error due to recall errors and social desirability effects. Monitoring devices such as accelerometers provide estimates with less error, but are more expensive to administer. Using data from the National Health and Nutrition Examination Survey (NHANES) 2003-2004, we develop a function that approximates MVPA as measured by accelerometer from self-reported physical activity
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- The address information is for the authors that have a + after their name.
- Authors who are presenting talks have a * after their name.
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