Previous US population–based studies have found that body weight may be underestimated when self-reported. However, this research may not apply to all US Hispanics/Latinos, many of whom are immigrants with distinct cultural orientations to ideal body size. We assessed the data quality and accuracy of self-reported weight in a diverse, community-based, US sample of primarily foreign-born Hispanic/Latino adults.
Using baseline data (2008–2011) from the Hispanic Community Health Study/Study of Latinos (HCHS/SOL), we described the difference between contemporaneous self-reported and measured current body weight (n = 16,119) and used multivariate adjusted models to establish whether the observed trends in misreporting in potential predictors of inaccuracy persisted after adjustment for other predictors. Last, we described the weighted percentage agreement in body mass classification using either self-reported or measured weight (n = 16,110).
Self-reported weight was well correlated with (r 2 = 0.95) and on average 0.23 kg greater than measured weight. The range of this misreporting was large and several factors were associated with misreporting: age group, gender, body mass categories, nativity, study site by background, unit of self-report (kg or lb), and end-digit preference. The percentage agreement of body mass classification using self-reported versus measured weight was 86% and varied across prevalent health conditions.
The direction of misreporting in self-reported weight, and thus the anticipated bias in obesity prevalence estimates based on self-reported weights, may differ in US Hispanic/Latinos from that found in prior studies. Future investigations using self-reported body weight in US Hispanic/Latinos should consider this information for bias analyses.
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From the aDepartment of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, NC; bCollaborative Studies Coordinating Center, Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, NC; cSan Diego State University, San Diego, CA; dUniversity of Miami, Miami, FL; eUniversity of Illinois at Chicago, Chicago, IL; fAlbert Einstein College of Medicine, Bronx, NY; gJacobi Medical Center, Bronx, NY; hSchool of Social Work, University of North Carolina at Chapel Hill, Chapel Hill, NC; iSchool of Social Welfare, The University of Kansas, Lawrence, KS; jDepartment of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC; and kCarolina Center for Genome Sciences, Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, NC.
Submitted 18 May, 2016; accepted 25 July, 2017.
The Hispanic Community Health Study/Study of Latinos was carried out as a collaborative study supported by contracts from the National Heart, Lung, and Blood Institute (NHLBI) to the University of North Carolina (N01-HC65233), University of Miami (N01-HC65234), Albert Einstein College of Medicine (N01-HC65235), Northwestern University (N01-HC65236), and San Diego State University (N01-HC65237). The following Institutes/Centers/Offices contribute to the HCHS/SOL through a transfer of funds to the NHLBI: National Institute on Minority Health and Health Disparities, National Institute on Deafness and Other Communication Disorders, National Institute of Dental and Craniofacial Research, National Institute of Diabetes and Digestive and Kidney Diseases, National Institute of Neurological Disorders and Stroke, and National Institutes of Health (NIH) Institution-Office of Dietary Supplements.
L.F.-R. is grateful for training and general support from the Cardiovascular Disease Epidemiology Training Grant from the National Heart, Lung, and Blood Institute (T32HL007055), the American Heart Association (AHA) predoctoral grant (13PRE16100015), and the Carolina Population Center (CPC) Center grant (P2C HD050924). P.G.-L. was supported by R01HD05719, and K.E.N. was supported by R01-DK089256, 2R01HD057194, U01HG007416, R01DK101855, and AHA grant 13GRNT16490017. The authors have no conflicts of interest to report.
Data Availability for Replication: Manuscript proposals to use the HCHS/SOL data can be submitted in http://www.cscc.unc.edu/hchs/. Computing code required for future replication of results can be obtained from the corresponding author.
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Correspondence: Lindsay Fernández-Rhodes, Department of Epidemiology, University of North Carolina at Chapel Hill, 137 East Franklin Street, Suite 306, Chapel Hill, NC 27514. E-mail: firstname.lastname@example.org.