Applying Recovery Biomarkers to Calibrate Self-Report Measures of Energy and Protein in the Hispanic Community Health Study/Study of Latinos

作者：Mossavar Rahmani Yasmin^*; Shaw Pamela A; Wong William W; Sotres Alvarez Daniela; Gellman Marc D; Van Horn Linda; Stoutenberg Mark; Daviglus Martha L; Wylie Rosett Judith; Siega Riz Anna Maria; Ou Fang Shu; Prentice Ross L

来源：American Journal of Epidemiology, 2015, 181(12): 996-1007.

DOI：10.1093/aje/kwu468

• biological markers
• calibration equations
• dietary measurement error
• Hispanics/Latinos
• 24-hour dietary recall
• nutrition assessment

We investigated measurement error in the self-reported diets of US Hispanics/Latinos, who are prone to obesity and related comorbidities, by background (Central American, Cuban, Dominican, Mexican, Puerto Rican, and South American) in 2010-2012. In 477 participants aged 18-74 years, doubly labeled water and urinary nitrogen were used as objective recovery biomarkers of energy and protein intakes. Self-report was captured from two 24-hour dietary recalls. All measures were repeated in a subsample of 98 individuals. We examined the bias of dietary recalls and their associations with participant characteristics using generalized estimating equations. Energy intake was underestimated by 25.3% (men, 21.8%; women, 27.3%), and protein intake was underestimated by 18.5% (men, 14.7%; women, 20.7%). Protein density was overestimated by 10.7% (men, 11.3%; women, 10.1%). Higher body mass index and Hispanic/Latino background were associated with underestimation of energy (P < 0.05). For protein intake, higher body mass index, older age, nonsmoking, Spanish speaking, and Hispanic/Latino back-ground were associated with underestimation (P < 0.05). Systematic underreporting of energy and protein intakes and overreporting of protein density were found to vary significantly by Hispanic/Latino background. We developed calibration equations that correct for subject-specific error in reporting that can be used to reduce bias in diet-disease association studies.

• 出版日期2015-6-15
• 单位西北大学