Activity Number:
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306
- Disease Prediction
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Type:
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Contributed
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Date/Time:
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Tuesday, July 31, 2018 : 8:30 AM to 10:20 AM
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Sponsor:
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Section on Statistics in Epidemiology
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Abstract #328712
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Presentation
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Title:
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A Statistical Approach Based on NHANES 1963-2016 Data to Track Severe Obesity in Children Aged 2-20 Years
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Author(s):
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Rong Wei* and David S Freedman
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Companies:
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National Center for Health Statistics and Division of Nutrition, Physical Activity and Obesity, CDC
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Keywords:
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Children obesity;
Body Mass Index;
CDC growth charts;
NHANES 1999-2016;
LMS parameters
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Abstract:
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The 95th percentile of Body Mass Index (BMIp95) in CDC 2000 child growth charts is used to define obesity in children. The CDC 2000 growth charts are restricted to between the 3rd - 97th percentiles. To track children with extreme BMI (above BMIp95), this study combined data above the BMIp95 from National Nutrition and Health Examination Survey (NHANES) 1999-2016 with the data in the CDC 2000 growth charts. Using sex specific 6-month age intervals, from 24 to 240 months, standard deviations (SD) were computed by treating the 6 month age intervals as symmetrical normal distributions centered at BMIp95. The SD curves were then smoothed along age using regression. This new SD was used to compute "z-scores" above 1.88 (or percentiles above BMIp95). This study suggested a complementary extreme BMI metric set to CD 2000 growth charts. Comparisons and discussions of this BMI metric against other alternative BMI metrics were also made in this study.
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Authors who are presenting talks have a * after their name.
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