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Table 2 Basic characteristics of participants in the NHANES 1999–2018

From: Association between cardiac metabolic index and diabetic kidney disease: a cross-sectional study of NHANES 1999–2018

Characteristic

Overall, N1 = 2371 (100%)2

DKD, N1 = 820 (31%)2

Non-DKD, N1 = 1551 (69%)2

P Value3

Age (years)

57 (14)

62 (14)

56 (13)

 < 0.001

Gender

   

 > 0.9

Female

1031 (45%)

346 (45%)

685 (46%)

 

Male

1340 (55%)

474 (55%)

866 (54%)

 

Race

   

0.3

Non-Hispanic White

939 (65.4%)

333 (63%)

606 (67%)

 

Non-Hispanic Black

524 (12.3%)

178 (12%)

346 (12%)

 

Mexican American

461 (9.1%)

169 (11%)

292 (8.4%)

 

Other Race

447 (13.2%)

140 (14%)

307 (12.6%)

 

PIR

   

 < 0.001

High (> 3.5)

670 (39%)

203 (33%)

467 (42%)

 

Low (≤ 1.3)

717 (20%)

277 (23%)

440 (18%)

 

Medium (> 1.3, ≤ 3.5)

984 (41%)

340 (44%)

644 (40%)

 

BMI

   

0.14

Normal (< 25)

357 (13%)

135 (15%)

222 (12%)

 

Obese (≥ 30)

1248 (58%)

437 (59%)

811 (57%)

 

Overweight (≥ 25, < 30)

766 (29%)

248 (26%)

518 (31%)

 

Smoking status

   

0.4

Current smoker

398 (17%)

143 (18%)

255 (16%)

 

Former smoker

820 (34%)

304 (36%)

516 (33.5%)

 

Never smoker

1153 (49%)

373 (46%)

780 (50.5%)

 

Education attainment

   

0.012

Less Than 9th Grade

338 (7.1%)

135 (8.5%)

203 (6.4%)

 

9-11th Grade

353 (11%)

133 (11.6%)

220 (10.7%)

 

High School Grad/GED

598 (28%)

211 (31.4%)

387 (26.5%)

 

Some College or AA degree

659 (30.6%)

213 (31.1%)

446 (30.4%)

 

College Graduate or above

423 (23.3%)

128 (17.4%)

295 (26%)

 

Marital status

   

0.038

Married/cohabiting

1505 (66.4%)

488 (62.8%)

1017 (68%)

 

Never married

213 (8.7%)

59 (7.2%)

154 (9.4%)

 

Widowed/divorced/separated

653 (24.9%)

273 (30%)

380 (22.6%)

 

Physical activity

   

0.8

Active

750 (32%)

254 (31%)

496 (32%)

 

Inactive

1621 (68%)

566 (69%)

1055 (68%)

 

CVD

470 (18%)

233 (26.2%)

237 (14.7%)

 < 0.001

Hypertension

1609 (66%)

649 (77.6%)

960 (61.1%)

 < 0.001

Hyperlipidemia

2073 (89%)

742 (89.9%)

1331 (87.9%)

0.2

Log2-VAI

1.13 (1.14)

1.27 (1.19)

1.07 (1.11)

0.002

Log2-ABSI

− 3.58 (0.08)

− 3.56 (0.08)

− 3.58 (0.07)

 < 0.001

Log2-CMI

− 2.22 (0.87)

− 2.07 (0.91)

− 2.29 (0.85)

 < 0.001

Log2-BRI

2.68 (0.52)

2.73 (0.51)

2.66 (0.52)

0.041

Log2-LAP

6.16 (1.10)

6.29 (1.16)

6.09 (1.07)

0.002

  1. 1N not Missing (unweighted);2Mean ± SD for continuous; n (%) for categorical;3t-test adapted to complex survey samples; chi-squared test with Rao & Scott's second-order correction. CVD, cardiovascular disease; VAI, visceral adiposity index; ABSI, a body shape index; CMI, Cardiac Metabolic Index; BRI, body roundness index; LAP, lipid accumulation product