Table 1 Baseline characteristics of study participants according to quartile groups of CMI, weighted.

N

8460

2115

2115

2115

2115

Age, (years)

47.120 ± 0.338

43.661 ± 0.529

47.352 ± 0.488

48.734 ± 0.553

49.125 ± 0.424

< 0.001

Sex (%)

< 0.001

Male

4109 (48.459%)

833 (37.356%)

968 (45.391%)

1055 (51.087%)

1253 (61.298%)

Female

4351 (51.541%)

1282 (62.644%)

1147 (54.609%)

1060 (48.913%)

862 (38.702%)

Poverty to income ratio

3.054 ± 0.041

3.191 ± 0.047

3.067 ± 0.061

3.003 ± 0.062

2.942 ± 0.058

0.001

Race/ethnicity (%)

< 0.001

Mexican American

1451 (8.602%)

224 (5.835%)

342 (8.386%)

418 (9.800%)

467 (10.708%)

Non-Hispanic White

3499 (66.875%)

800 (64.890%)

852 (67.487%)

858 (64.649%)

989 (70.584%)

Non-Hispanic Black

1742 (10.982%)

649 (16.043%)

514 (12.449%)

361 (9.396%)

218 (5.434%)

Other

1768 (13.542%)

442 (13.232%)

407 (11.677%)

478 (16.155%)

441 (13.274%)

Education level (%)

< 0.001

Below high school

2084 (15.516%)

380 (11.457%)

493 (14.460%)

573 (17.096%)

638 (19.544%)

High School or above

6372 (84.484%)

1734 (88.543%)

1622 (85.540%)

1540 (82.904%)

1476 (80.456%)

Marital status (%)

0.277

Married/Living with a partner

4502 (91.278%)

996 (92.108%)

1095 (89.996%)

1172 (90.970%)

1239 (91.998%)

Windowed/Divorced/

Separated/Never married

631 (8.722%)

138 (7.892%)

176 (10.004%)

167 (9.030%)

150 (8.002%)

Waist circumference

99.335 ± 0.358

87.089 ± 0.393

97.360 ± 0.455

103.899 ± 0.498

110.429 ± 0.546

< 0.001

WHtR

0.589 ± 0.002

0.519 ± 0.002

0.579 ± 0.003

0.617 ± 0.003

0.650 ± 0.003

< 0.001

BMI (kg/m²) (%)

< 0.001

< 25.0 kg/m2

2377 (30.079%)

1207 (60.664%)

635 (31.825%)

358 (17.098%)

177 (7.196%)

25.0–29.9 kg/m2

2824 (32.536%)

591 (27.477%)

775 (35.766%)

783 (36.264%)

675 (31.161%)

≥ 30.0 kg/m2

3249 (37.385%)

315 (11.859%)

705 (32.409%)

968 (46.639%)

1,261(61.643%)

Smoker (%)

< 0.001

Current smoker

1674 (20.390%)

353 (16.660%)

398 (19.090%)

468 (23.892%)

455 (22.442%)

Former smoker

2149 (25.900%)

441 (22.103%)

515 (24.523%)

528 (25.059%)

665 (32.316%)

Never smoker

4627 (63.710%)

1318 (61.236%)

1200 (56.387%)

1116 (51.049%)

993 (45.242%)

Alcohol user (%)

0.205

≥ 12 drinks/year

4179 (74.973%)

1004 (75.909%)

1027 (74.527%)

1065 (76.686%)

1083 (72.879%)

< 12 drinks/year

1818 (25.027%)

424 (24.091%)

455 (25.473%)

446 (23.314%)

493 (27.121%)

Hypertension history (%)

< 0.001

Yes

3592 (37.012%)

643 (23.591%)

849 (33.858%)

998 (42.921%)

1102 (49.313%)

No

4868 (62.988%)

1472 (76.409%)

1266 (66.142%)

1117 (57.079%)

1013 (50.687%)

Diabetes Mellitus (%)

< 0.001

Yes

1631 (13.736%)

170 (4.663%)

315 (9.552%)

468 (16.094%)

678 (25.752%)

No

6829 (86.264%)

1945 (95.337%)

1800 (90.448%)

1647 (83.906%)

1437 (74.248%)

TC(mmol/L)

4.990 ± 0.021

4.740 ± 0.027

4.913 ± 0.033

5.025 ± 0.029

5.310 ± 0.031

< 0.001

HDL-C(mmol/L)

1.418 ± 0.008

1.819 ± 0.014

1.476 ± 0.008

1.274 ± 0.007

1.056 ± 0.006

< 0.001

TG(mmol/L)

1.407 ± 0.016

0.638 ± 0.006

1.008 ± 0.007

1.422 ± 0.009

2.649 ± 0.042

< 0.001

LDL-C(mmol/L)

2.940 ± 0.016

2.629 ± 0.022

2.975 ± 0.027

3.098 ± 0.024

3.100 ± 0.025

< 0.001

OSA (%)

< 0.001

Yes

4160 (48.511%)

793 (35.377%)

958 (44.429%)

1123 (53.423%)

1286 (62.419%)

No

4300 (51.489%)

1322 (64.623%)

1157 (55.571%)

992 (46.577%)

829 (37.581%)