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Table 1 Characteristics of study population, NHANES 1999–2014

From: Greater vegetable variety and amount are associated with lower prevalence of coronary heart disease: National Health and Nutrition Examination Survey, 1999–2014

Characteristic na Percent (95% CI)b
Age (y) 38,981  
 20–30   21.2 (20.2–22.2)
 31–50   39.1 (38.0–40.1)
 51–70   29.2 (28.3–30.0)
 70+   10.6 (10.1–11.1)
Sex 38,981  
 Women   52.0 (51.4–52.5)
 Men   48.0 (47.5–48.6)
Race/ethnicity 33,528  
 Non-Hispanic white   78.5 (76.4–80.4)
 Non-Hispanic black   12.6 (11.2–14.1)
 Mexican-American   8.9 (7.7–10.3)
Education 38,930  
 Less than high school   18.3 (17.4–19.4)
 High school or equivalent   24.1 (23.2–25.1)
 Some college   30.9 (30.1–31.7)
 College graduate   26.6 (25.2–28.1)
Income-to-poverty ratio 35,890  
  < 0.75   9.1 (8.3–9.8)
 0.75–1.24   11.7 (10.9–12.4)
 1.25–1.99   14.7 (14.0–15.4)
 2.00–3.99   28.9 (27.9–29.9)
 4.00+   35.7 (34.1–37.4)
BMI (kg/m2) 38,712  
  > 18.5   1.6 (1.4–1.8)
 18.5–24.9   30.1 (29.2–31.0)
 25 to < 30   52.8 (51.9–53.6)
  ≥ 30   15.5 (14.9–16.2)
Current smoker 38,981  
 No   24.6 (23.7–25.4)
 Yes   22.7 (21.9–23.6)
 Missing   52.7 (51.6–53.8)
Household size (n) 38,981 3.0 (3.0–3.0)
Food security status 38,243  
 Very low   5.0 (4.6–5.4)
 Low   6.7 (6.3–7.2)
 Marginal   7.6 (7.1–8.1)
 Full   80.7 (79.8–81.5)
Food consumed away from home (meals/week) 38,964 3.4 (3.3–3.5)
Currently living with a domestic partner 38,499  
 No   37.2 (36.1–38.4)
 Yes   62.8 (61.6–63.9)
Prevalent diseasec
 Coronary heart disease 1615 3.3 (3.1–3.6)
 Stroke 1430 2.7 (2.5–2.9)
 Diabetes 5129 9.8 (9.4–10.2)
 Cardiovascular diseased 2805 5.6 (5.2–6.0)
 Cardiometabolic diseasee 6977 13.6 (13.0–14.2)
  1. BMI, body mass index
  2. aSample sizes are unweighted
  3. bPercentages within each column (adjusted for survey weight), unless otherwise specified
  4. cValues represent the number of cases and the percent of cases out of the total sample
  5. dCoronary heart disease or stroke
  6. eCardiovascular disease or diabetes