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Title: Evaluation of Bias in Estimates of Early Childhood Obesity From Parent-Reported Heights and Weights
Resulting in 1 citation.
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Rendall, Michael S. Weden, Margaret M. Lau, Christopher Brownell, Peter B. Nazarov, Zafar Fernandes, Meenakshi |
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Evaluation of Bias in Estimates of Early Childhood Obesity From Parent-Reported Heights and Weights American Journal of Public Health 104,7 (July 2014): 1255-1262. Also: http://ajph.aphapublications.org/doi/full/10.2105/AJPH.2014.302001 Cohort(s): Children of the NLSY79 Publisher: American Public Health Association Keyword(s): Body Mass Index (BMI); Child Health; Data Quality/Consistency; Height; Obesity; Panel Study of Income Dynamics (PSID); Weight Permission to reprint the abstract has not been received from the publisher. Objectives: We evaluated bias in estimated obesity prevalence owing to error in parental reporting. We also evaluated bias mitigation through application of Centers for Disease Control and Prevention’s biologically implausible value (BIV) cutoffs. Methods: We simulated obesity prevalence of children aged 2 to 5 years in 2 panel surveys after counterfactually substituting parameters estimated from 1999-2008 National Health and Nutrition Examination Survey data for prevalence of extreme height and weight and for proportions obese in extreme height or weight categories. Results: Heights reported below the first and fifth height-for-age percentiles explained between one half and two thirds, respectively, of total bias in obesity prevalence. Bias was reduced by one tenth when excluding cases with height-for-age and weight-for-age BIVs and by one fifth when excluding cases with body mass–index-for-age BIVs. Applying BIVs, however, resulted in incorrect exclusion of nonnegligible proportions of obese children. Conclusions: Correcting the reporting of children's heights in the first percentile alone may reduce overestimation of early childhood obesity prevalence in surveys with parental reporting by one half to two thirds. Excluding BIVs has limited effectiveness in mitigating this bias. |
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Bibliography Citation
Rendall, Michael S., Margaret M. Weden, Christopher Lau, Peter B. Brownell, Zafar Nazarov and Meenakshi Fernandes. "Evaluation of Bias in Estimates of Early Childhood Obesity From Parent-Reported Heights and Weights." American Journal of Public Health 104,7 (July 2014): 1255-1262.
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