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Table 1 Baseline characteristics of the participants based on the presence of NAFLD

From: The HbA1c/HDL-C ratio as a screening indicator of NAFLD in U.S. adults: a cross-sectional NHANES analysis (2017–2020)

Variables

Total (n = 5891)

NAFLD (n = 2641)

Non-NAFLD (n = 3250)

Test of significance

Age, [M (P25, P 75)]

54.00 (38.00–66.00)

56.00 (43.00–67.00)

51.00 (34.00–66.00)

< 0.001#

 < 40

1574 (26.7)

511 (19.3)

1063 (32.7)

< 0.001

 40–59

1970 (33.4)

973 (36.8)

997 (30.7)

 

 ≥ 60

2348 (39.9)

1157 (43.8)

1190 (36.6)

 

Gender(%)

   

< 0.001

 Male

2821 (47.9)

1406 (53.2)

1415 (43.5)

 

 Female

3070 (52.1)

1235 (46.8)

1835 (56.5)

 

Education level (%)

   

0.168

  Less than high school

1056 (17.9)

501 (19.0)

555 (17.1)

 

  High school

1356 (23.0)

598 (22.6)

758 (23.3)

 

  More than high school

3479 (59.0)

1542 (58.4)

1937 (59.6)

 

Race/ethnicity (%)

   

< 0.001

 Mexican American

639 (10.8)

371 (14.0)

268 (8.2)

 

 Other Hispanic

600 (10.2)

271 (10.3)

329 (10.1)

 

 Non-Hispanic White

2057 (34.9)

969 (36.7)

1088 (33.5)

 

 Non-Hispanic Black

1541 (26.2)

582 (22.0)

959 (29.5)

 

 Other Race

1054 (17.9)

448 (17.0)

606 (18.6)

 

PIR (%)

   

0.318

 < 1.3

1544 (26.2)

667 (25.3)

877 (27.0)

 

 ≥ 1.3,<3.5

2292 (38.9)

1044 (39.5)

1248 (38.4)

 

 ≥ 3.5

2055 (34.9)

930 (35.2)

1125 (34.6)

 

BMI, [M (P25, P 75)]

28.70 (25.00-33.60)

33.48 (7.49)

27.16 (5.86)

< 0.001#

Smoking status (%)

   

< 0.001

 Never

3670 (62.3)

1611 (61.0)

2059 (63.4)

 

 Former

1428 (24.2)

720 (27.3)

708 (21.8)

 

 Current smoker

793 (13.5)

310 (11.7)

483 (14.9)

 

Comorbidities

Diabetes (%)

   

< 0.001

 Yes

1286 (21.8)

871 (33.0)

415 (12.8)

 

 No

4605 (78.2)

1770 (67.0)

2835 (87.2)

 

Hypertension (%)

   

< 0.001

 Yes

2825 (48.0)

1511 (57.2)

1314 (40.4)

 

 No

3066 (52.0)

1130 (42.8)

1936 (59.6)

 

Coronary heart disease (%)

   

< 0.001

 Yes

697 (11.8)

364 (13.8)

333 (10.2)

 

 No

5194 (88.2)

2277 (86.2)

2917 (89.8)

 

Laboratory findings

 ALT, [M (P25, P 75)]

17.00 (13.00–25.00)

20.00 (15.00–29.00)

15.00 (12.00–21.00)

< 0.001#

 AST, [M (P25, P 75)]

19.00 (16.00–23.00)

20.00 (16.00–25.00)

18.00 (16.00–22.00)

< 0.001#

 TG, [M (P25, P 75)]

1.28 (0.89–1.86)

1.56 (1.12–2.25)

1.07 (0.79–1.56)

< 0.001#

 TC, [M (P25, P 75)]

4.73 (4.09–5.46)

4.78 (4.11–5.51)

4.71 (4.06–5.40)

0.007#

 HbA1c, [M (P25, P 75)]

5.60 (5.30-6.00)

5.80 (5.50–6.40)

5.50 (5.30–5.80)

< 0.001#

 HDL, [M (P25, P 75)]

1.32 (1.09–1.58)

1.19 (1.01–1.42)

1.42 (1.19–1.71)

< 0.001#

 HbA1c/HDL, [M (P25, P 75)]

4.34 (3.49–5.41)

5.00 (4.06–6.12)

3.88 (3.22–4.77)

< 0.001#

  1. Values are n (%) or mean (standard deviation). Abbreviations: NAFLD, nonalcoholic fatty liver disease; PIR, poverty to income ratio. BMI, body mass index; ALT, alanine aminotransferase. AST, Aspartate Aminotransferase; TC, total cholesterol; TG, triglyceride; HbA1c, Glycated Hemoglobin; HDL, High-Density Lipoprotein. HbA1c/HDL-C ratio: hemoglobin A1c to high-density lipoprotein cholesterol ratio. “#” indicates that the rank-sum test was used