| Titre : | Parent-Reported Height and Weight as Sources of Bias in Survey Estimates of Childhood Obesity (2013) |
| Auteurs : | Margaret-M WEDEN ; Economics Sociology and Statistics Rand Corporation (Santa Monica CA, Etats-Unis) ; Peter-B BROWNELL ; Michael-S RENDALL ; Christopher LAU ; Meenakshi FERNANDES ; Zafar NAZAROV |
| Type de document : | Article |
| Dans : | American journal of epidemiology (vol. 178, n° 3, Août 2013) |
| Pagination : | 461-473 |
| Langues: | Anglais |
| Mots-clés : | Obésité ; Parent ; Taille corporelle ; Poids corporel ; Surveillance ; Enquête épidémiologique ; Enquête ; Estimation ; Enfant ; Facteur socioéconomique ; Epidémiologie ; Homme ; Biais |
| Résumé : | [BDSP. Notice produite par INIST-CNRS An9GR0xn. Diffusion soumise à autorisation]. Parental reporting of height and weight was evaluated for US children aged 2-13 years. The prevalence of obesity (defined as a body mass index value (calculated as weight (kg)/height (m) 2) in the 95th percentile or higher) and its height and weight components were compared in child supplements of 2 nationally representative surveys : the 1996-2008 Children of the National Longitudinal Survey of Youth 1979 Cohort (NLSY79-Child) and the 1997 Child Development Supplement of the Panel Study of Income Dynamics (PSID-CDS). Sociodemographic differences in parent reporting error were analyzed. Error was largest for children aged 2-5 years. Underreporting of height, not overreporting of weight, generated a strong upward bias in obesity prevalence at those ages. Frequencies of parent-reported heights below the Centers for Disease Control and Prevention's (Atlanta, Georgia) first percentile were implausibly high at 16.5% (95% confidence interval (CI) : 14.3,19.0) in the NLSY79-Child and 20.6% (95% CI : 16.0,26.3) in the PSID-CDS. They were highest among low-income children at 33.2% (95% CI : 22.4,46.1) in the PSID-CDS and 26.2% (95% CI : 20.2,33.2) in the NLSY79-Child. Bias in the reporting of obesity decreased with children's age and reversed direction at ages 12-13 years. Underreporting of weight increased with age, and underreporting of height decreased with age. We recommend caution to researchers who use parent-reported heights, especially for very young children, and offer practical solutions for survey data collection and research on child obesity. |
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