The Accuracy of Self-Reported Body Weight Is High but Dependent on Recent Weight Change and Negative Affect in Teenage Girls

Research studies often rely on self-reported weight to calculate body mass index. The present study investigated how the accuracy of self-reported body weight in adolescent girls is affected by overweight/obesity, race/ethnicity, and mental health factors. In a cohort of girls who participated in th...

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Bibliographic Details
Published inInternational journal of environmental research and public health Vol. 17; no. 21; p. 8203
Main Authors Koebnick, Corinna, Saksvig, Brit, Li, Xia, Sidell, Margo, Wu, Tong Tong, Young, Deborah R
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 06.11.2020
MDPI
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Summary:Research studies often rely on self-reported weight to calculate body mass index. The present study investigated how the accuracy of self-reported body weight in adolescent girls is affected by overweight/obesity, race/ethnicity, and mental health factors. In a cohort of girls who participated in the Trial of Activity for Adolescent Girls at ages 11 and 17 ( = 588), self-reported and measured weight were compared, and linear regression models were fitted to model the over- or underreporting. The Center for Epidemiological Studies-Depression Scale (CES-D) was used to calculate depressive symptom subscales for negative affect, anhedonia and somatic symptoms. Allowing 3% difference between self-reported and measured weight for the correct reporting of body weight, 59.2% of girls reported their weight correctly, 30.3% underreported (-5.8 ± 4.8 kg), and 10.5% overreported (4.3 ± 3.5 kg). The average difference between self-reported and measured body weight was -1.5 ± 4.3 kg ( < 0.001). Factors for misreporting body weight were overweight (β ± SE - 2.60 ± 0.66%), obesity (β ± SE - 2.41 ± 0.71%), weight change between ages 11 and 17 (β ± SE - 0.35 ± 0.04% for each kg), height change between ages 11 and 17 (β ± SE 0.29 ± 0.10% for each cm), and negative affect (β ± SE - 0.18 ± 0.08% for each score unit). The difference between self-reported and measured body weight in adolescent girls is relatively small. However, the accuracy of self-reported body weight may be lower in girls with overweight or obesity, recent weight and height change, and higher negative affect.
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ISSN:1660-4601
1661-7827
1660-4601
DOI:10.3390/ijerph17218203