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Activity Number:
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334
- New Methods for Survey Weighting and Variance Estimation
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Type:
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Contributed
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Date/Time:
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Wednesday, August 5, 2020 : 10:00 AM to 2:00 PM
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Sponsor:
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Survey Research Methods Section
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Abstract #312829
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Title:
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Creating Proper Weights with Few PSUs: A Comparison of a GREG Adjustment to Calibration for National Health and Nutrition Examination Survey (NHANES) 2017-2018 Weights
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Author(s):
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Te-Ching Chen* and Jay Clark and Minsun Riddles
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Companies:
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CDC/NCHS and Westat and Westat
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Keywords:
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NHANES;
Weighting;
GREG;
Calibration
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Abstract:
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The National Health and Nutrition Examination Survey (NHANES) is unique in collecting participant's health information through a standardized physical examination in a mobile examination center (MEC). To collect high quality data in a cost efficient and timely manner, the MECs travel to only 30 study locations throughout the country every two years. With relatively few study locations, creating proper sample weights is critical to calculating accurate and precise estimates for analysis. For the NHANES 2017-2018 data collection cycle, multiple methods for creating weights were considered, including a base weight adjustment using generalized regression (GREG) at the study location level and a final weight adjustment using calibration at the individual level. This paper compares and contrasts these two adjustment methods and discusses the results for NHANES outcomes.
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Authors who are presenting talks have a * after their name.
