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Table 1 Characteristics of the NHANES 2017–2020 participants

From: The association between the dietary index for gut microbiota and metabolic dysfunction-associated fatty liver disease: a cross-sectional study

Characteristics

Total adults

(N = 7243)

No MAFLD

(N = 3139)

MAFLD

(N = 4104)

P

value

Age, mean (SE), years

48.22(0.58)

44.59(0.69)

51.20(0.60)

< 0.001

Age, n (%)

   

0.002

20–65

5525(79.06)

2478(82.51)

3047(76.22)

 

≥ 65

1718(20.94)

661(17.49)

1057(23.78)

 

Gender, n (%)

   

< 0.001

Male

3578(49.04)

1421(42.88)

2157(54.10)

 

Female

3665(50.96)

1718(57.12)

1947(45.90)

 

Race and Ethnicity

   

< 0.001

Non-Hispanic White

2568(62.38)

1084(63.32)

1484(61.60)

 

Non-Hispanic Black

1937(11.46)

972(13.49)

965(9.79)

 

Mexican American

849(8.38)

256(6.03)

593(10.30)

 

Other Race

1889(17.79)

827(17.16)

1062(18.30)

 

Marital status, n (%)

   

< 0.001

Married/Living with partner

4195(61.64)

1693(55.69)

2502(66.52)

 

Never married

1430(19.87)

779(26.47)

651(14.45)

 

Widowed/Divorced/Separated

1618(18.49)

667(17.84)

951(19.03)

 

Education level, n (%)

   

0.020

Less than high school graduate

1265(10.25)

497(9.09)

768(11.21)

 

High school graduate or GED

1753(27.64)

738(25.98)

1015(29.00)

 

Some college or above

4225(62.11)

1904(64.93)

2321(59.79)

 

PIR, mean (SE)

3.12(0.05)

3.13(0.07)

3.10(0.05)

0.670

PIR, n (%)

   

0.520

≤ 1.3

2048(19.76)

908(19.94)

1140(19.61)

 

1.3∼3.5

2795(34.41)

1176(33.40)

1619(35.24)

 

> 3.5

2400(45.83)

1055(46.66)

1345(45.15)

 

Smoking, n (%)

   

0.002

Never

4167(57.23)

1866(59.27)

2301(55.55)

 

Ex-smoker

1741(25.46)

612(22.01)

1129(28.29)

 

Current-smoker

1335(17.31)

661(18.72)

674(16.16)

 

Drinking, n (%)

   

0.840

no

847(8.48)

375(8.60)

472(8.39)

 

yes

6396(91.52)

2764(91.40)

3632(91.61)

 

DI-GM, Mean (SE)

4.59(0.05)

4.64(0.06)

4.55(0.04)

0.100

DI-GM, n (%)

   

0.230

0–3

1940(24.67)

833(24.83)

1107(24.54)

 

4

1862(24.78)

785(23.10)

1077(26.15)

 

5

1644(22.63)

703(22.32)

941(22.89)

 

≥ 6

1797(27.92)

818(29.75)

979(26.42)

 
  1. All means and SEs for continuous variables and percentages for categorical variables were weighted. The DI-GM ranges from 0–14 (including beneficial to gut microbiota [ranges from 0–10] and unfavorable to gut microbiota [ranges from 0–4]) and grouped according to 0–3, 4, 5, and ≥ 6