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Table 1 Characteristics of study participants according to individual vegetable intake from NHANES 1999–2018, weighted(n = 24,646)a

From: Associations of starchy and non-starchy vegetables with risk of metabolic syndrome: evidence from the NHANES 1999–2018

 

Total starchy vegetables(servings/day)

 

Total non-starchy vegetables(servings/day)

 

variables

0

< 2

≥ 2

P

0

< 2

≥ 2

P

Age, years

44.91 ± 0.31

46.07 ± 0.34

46.50 ± 0.30

< 0.001

44.15 ± 0.63

46.28 ± 0.60

45.88 ± 0.24

0.024

BMI, kg/m2

28.26 ± 0.11

28.34 ± 0.14

28.60 ± 0.13

0.076

28.85 ± 0.30

28.67 ± 0.22

28.38 ± 0.09

0.146

Gender, n (%)

   

< 0.001

   

0.016

 Female

3978(49.54)

3378(53.80)

4369(44.37)

 

455(46.62)

951(52.87)

10,319(48.39)

 

 Male

4351(50.46)

3046(46.20)

5524(55.63)

 

609(53.38)

905(47.13)

11,407(51.61)

 

Race, n (%)

   

< 0.001

   

< 0.001

 Mexican American

1412(7.75)

879(6.21)

1523(7.31)

 

103(4.93)

247(4.79)

3464(7.44)

 

 Non-Hispanic Black

1484(8.60)

1336(9.96)

1742(8.91)

 

306(15.77)

459(13.91)

3797(8.44)

 

 Non-Hispanic White

4190(73.51)

3353(74.18)

4905(71.77)

 

516(67.60)

933(72.97)

10,999(73.23)

 

 Other races

1243(10.14)

856(9.64)

1723(12.01)

 

139(11.70)

217(8.33)

3466(10.89)

 

Education, n (%)

   

0.022

   

< 0.001

 Less than 9th grade

763(3.93)

405(2.89)

747(3.62)

 

104(5.26)

194(5.39)

1617(3.32)

 

 9th-11th grade

1009(8.62)

745(8.12)

1213(9.16)

 

202(16.38)

267(11.98)

2498(8.13)

 

 High school

1797(21.83)

1510(23.27)

2334(23.18)

 

297(30.86)

508(26.40)

4836(22.12)

 

 Some college

2554(32.44)

2017(32.04)

3067(33.08)

 

328(32.62)

553(33.99)

6757(32.48)

 

 College or above

2206(33.18)

1747(33.67)

2532(30.97)

 

133(14.88)

334(22.24)

6018(33.95)

 

PIR, n (%)

   

< 0.001

   

< 0.001

 < 1.30

2298(19.82)

1534(16.50)

2620(17.97)

 

409(33.96)

547(23.09)

5496(17.18)

 

 1.30–3.49

3039(32.15)

2360(33.39)

3822(36.24)

 

386(35.49)

742(36.92)

8093(33.82)

 

 ≥ 3.50

2992(48.03)

2530(50.11)

3451(45.78)

 

269(30.56)

567(39.99)

8137(49.00)

 

Marital status, n (%)

   

< 0.001

   

< 0.001

 Unmarried

3967(45.22)

2785(40.08)

4294(41.54)

 

606(56.86)

889(45.45)

9551(41.56)

 

 Married

4362(54.78)

3639(59.92)

5599(58.46)

 

458(43.14)

967(54.55)

12,175(58.44)

 

Serum creatinine, umol/L

77.43 ± 0.39

77.05 ± 0.35

79.27 ± 0.31

< 0.001

82.82 ± 2.02

76.89 ± 0.68

77.94 ± 0.23

< 0.001

Uric acid, µmol/L

321.55 ± 1.34

318.41 ± 1.36

326.43 ± 1.41

< 0.001

329.55 ± 3.99

320.94 ± 2.72

322.48 ± 0.98

0.197

ALT, U/L

25.89 ± 0.35

25.34 ± 0.35

26.32 ± 0.30

0.115

25.19 ± 0.80

26.76 ± 1.40

25.88 ± 0.17

0.559

AST, U/L

25.58 ± 0.26

25.14 ± 0.28

25.44 ± 0.22

0.513

25.10 ± 0.53

25.19 ± 0.45

25.44 ± 0.14

0.726

Smoke, n (%)

1837(21.61)

1255(19.21)

1922(19.38)

0.023

370(36.19)

472(25.91)

4172(18.97)

< 0.001

Physical activity (MET-

minute/week), n (%)

   

0.001

   

< 0.001

 < 600

2918(33.16)

2450(37.25)

3378(33.28)

 

392(35.84)

850(45.78)

7504(33.36)

 

 600–1200

1236(14.33)

945(14.73)

1513(14.62)

 

149(14.72)

268(13.19)

3277(14.65)

 

 ≥ 1200

4175(52.51)

3029(48.01)

5002(52.09)

 

523(49.44)

738(41.02)

10,945(51.99)

 

Alcohol status, n (%)

   

0.057

   

< 0.001

 Never

2189(21.05)

1735(21.83)

2783(23.52)

 

358(29.09)

610(27.10)

5739(21.58)

 

 Mild

3007(37.55)

2334(38.75)

3549(37.22)

 

304(27.64)

630(35.42)

7956(38.34)

 

 Moderate

1369(18.74)

1132(18.86)

1555(17.65)

 

136(13.86)

276(17.14)

3644(18.62)

 

 Heavy

1764(22.66)

1223(20.56)

2006(21.61)

 

266(29.41)

340(20.34)

4387(21.46)

 
  1. Continuous variables were shown as mean ± SE, categorical variables were shown as frequency(percentage)
  2. aAll estimates accounted for complex survey designs, and all percentages were weighted
  3. Abbreviations: MetS, metabolic syndrome; PIR, poverty income ratio; ALT, alanine aminotransferase; AST, aspartate aminotransferase; MET, metabolic equivalent; SE, standard error