JAMA Netw Open. 2021 Apr 1;4(4):e215262. doi: 10.1001/jamanetworkopen.2021.5262.

ABSTRACT

IMPORTANCE: Time trends and population disparities in nutritional quality of foods from major US sources, including grocery stores, restaurants, schools, worksites, and other sources, are not well established.

OBJECTIVE: To investigate patterns and trends in diet quality by food sources among US children and adults overall and in sociodemographic subgroups.

DESIGN, SETTING, AND PARTICIPANTS: This serial, cross-sectional survey study included respondents from 8 National Health and Nutrition Examination Survey cycles (2003-2018) with valid dietary recalls. Data were analyzed from April 16, 2020, to July 20, 2020.

EXPOSURES: Survey cycle, food source,

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