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Table 1 Summary of data sources, sample, measures of socioeconomic status (SES), and health indicators used to examine income and education disparities in health

From: Socioeconomic disparities in health outcomes in the United States in the late 2010s: results from four national population-based studies

Data source (Place, Years)

Age groups (Age; Sample size)

Racial/ethnic groups (Sample size)

Measures of SES

Health indicators

National Health Interview Survey (US, 2015–2018)

Children (2–17 y; n = 75,111), Young and middle-aged adults (25–64 y; n = 181,447), Older adults (≥ 65 y; n = 57,753)

Non-Hispanic Blacks (Children: 10,345, Young and middle-aged adults: 21,235, Older adults: 5,457), Hispanic (Children: 19,462, Young and middle-aged adults: 31,150, Older adults: 4,566), Non-Hispanic White (Children: 39,438, Young and middle-aged adults: 114,331, Older adults: 44,461), Non-Hispanic Asian (Children: 4,378, Young and middle-aged adults: 12,014, Older adults: 2,716)

Family income as a percentage of federal poverty level (FPL), educational attainment (for child indicators, head of household; for adult indicators, individual)

Respondent-rated poor health: ‘‘poor,’’ ‘‘fair,’’ or ‘‘good’’ health vs ‘‘very good’’ or ‘‘excellent’’ health

Obesity: respondent-assessed body mass index ≥ 30 kg/m2

National Health and Nutrition Examination Survey (US, 2017-March 2020)

Children (2–17 y; n = 4,292), Young and middle-aged adults (25–64 y; n = 5,233), Older adults (≥ 65 y; n = 2,022)

Non-Hispanic Black (Children: 1,122, Young and middle-aged adults: 1,434, Older adults: 462), Hispanic (Children: 964, Young and middle-aged adults: 1,167),

Non-Hispanic White (Children: 1,434, Young and middle-aged adults: 1,623, Older adults: 1,064)

Family income as a percentage of FPL, educational attainment (for adult indicators only)

Respondent-rated poor health: ‘‘poor,’’ ‘‘fair,’’ or ‘‘good’’ health vs ‘‘very good’’ or ‘‘excellent’’ health

Obesity: objectively measured body mass index ≥ 30 kg/m2

Behavioral Risk Factor Surveillance System (US, 2016–2020)

Young and middle-aged adults (25–64 y; n = 424,595), Older adults (≥ 65 y; n = 268,949)

Non-Hispanic Black (Young and middle-aged adults: 34,951, Older adults: 16,296), Hispanic (Young and middle-aged adults: 44,542, Older adults: 10,344), Non-Hispanic Asian (Young and middle-aged adults: 302,223, Older adults: 224,734), Non-Hispanic White (Young and middle-aged adults: 11,475, Older adults: 3,237)

Educational attainment

Respondent-rated poor health: ‘‘poor,’’ ‘‘fair,’’ or ‘‘good’’ health vs ‘‘very good’’ or ‘‘excellent’’ health

Obesity: respondent-assessed body mass index ≥ 30 kg/m2

Health and Retirement Study (US, 2016)

Older adults (age ≥ 65 y; n = 9,539)

Non-Hispanic Black/African American (n = 1,589), Hispanic (n = 1,076), Non-Hispanic White/Caucasian (n = 6,874)

Household income as a percentage of FPL, Educational attainment

Respondent-rated poor health: “poor,” “fair,” or “good,” health vs “very good,” or “excellent” health

Obesity: respondent-assessed body mass index ≥ 30 kg/m2