Table 1 Baseline characteristics of study participants.
From: Associations between surrogate insulin resistance indexes and osteoarthritis: NHANES 2003–2016
Characteristic | Overall N = 14,715 (100%) | non-OA N = 13,136 (89%) | OA N = 1579 (11%) | P value |
|---|---|---|---|---|
Age (years) | 45.9 ± 16.5 | 43.9 ± 15.9 | 60.9 ± 13.0 | < 0.001 |
Gender | < 0.001 | |||
Male | 7205 (49%) | 6635 (51%) | 570 (36%) | |
Female | 7510 (51%) | 6501 (49%) | 1009 (64%) | |
Race | < 0.001 | |||
Non-Hispanic White | 6544 (68%) | 5519 (66%) | 1025 (83%) | |
Non-Hispanic Black | 2860 (11%) | 2639 (12%) | 221 (6.5%) | |
Mexican American | 2500 (8.6%) | 2369 (9.4%) | 131 (3.0%) | |
Other Races | 1431 (7.2%) | 1343 (7.5%) | 88 (4.8%) | |
Other Hispanic | 1380 (5.3%) | 1266 (5.7%) | 114 (2.5%) | |
Education level | 0.2 | |||
< High school | 3738 (17%) | 3382 (17%) | 356 (16%) | |
High School | 3304 (22%) | 2960 (23%) | 344 (21%) | |
> High school | 7673 (61%) | 6794 (61%) | 879 (64%) | |
PIR | 0.001 | |||
< 1.3 | 4654 (21%) | 4250 (22%) | 404 (17%) | |
1.3–3.49 | 5573 (37%) | 4937 (37%) | 636 (39%) | |
> = 3.5 | 4488 (42%) | 3949 (41%) | 539 (45%) | |
Smoke status | < 0.001 | |||
Current smoker | 3064 (21%) | 2787 (21%) | 277 (18%) | |
Former smoker | 3549 (24%) | 2996 (23%) | 553 (35%) | |
Never smoker | 8102 (55%) | 7353 (56%) | 749 (47%) | |
Alcohol status | 10,508 (76%) | 9421 (77%) | 1087 (74%) | 0.067 |
Diabetes | 2399 (12%) | 2003 (11%) | 396 (21%) | < 0.001 |
Hypertension | 5726 (34%) | 4691 (31%) | 1035 (60%) | < 0.001 |
BMI (kg/m2) | 29 ± 7 | 28 ± 7 | 31 ± 7 | < 0.001 |
WC (cm) | 98 ± 16 | 98 ± 16 | 104 ± 16 | < 0.001 |
WHtR | 0.58 ± 0.10 | 0.58 ± 0.09 | 0.63 ± 0.10 | < 0.001 |
TyG | 8.60 ± 0.66 | 8.58 ± 0.66 | 8.75 ± 0.64 | < 0.001 |
TyG-WC | < 0.001 | |||
Q1 | 3679 (27%) | 3465 (29%) | 214 (15%) | |
Q2 | 3679 (25%) | 3331 (25%) | 348 (23%) | |
Q3 | 3678 (24%) | 3226 (24%) | 452 (26%) | |
Q4 | 3679 (25%) | 3114 (23%) | 565 (37%) | |
TyG-BMI | < 0.001 | |||
Q1 | 3679 (27%) | 3434 (28%) | 245 (17%) | |
Q2 | 3679 (25%) | 3312 (25%) | 367 (23%) | |
Q3 | 3678 (24%) | 3270 (24%) | 408 (24%) | |
Q4 | 3679 (24%) | 3120 (23%) | 559 (36%) | |
TyG-WHtR | < 0.001 | |||
Q1 | 3679 (28%) | 3497 (30%) | 182 (13%) | |
Q2 | 3679 (26%) | 3337 (26%) | 342 (23%) | |
Q3 | 3678 (24%) | 3232 (23%) | 446 (26%) | |
Q4 | 3679 (23%) | 3070 (21%) | 609 (37%) | |
VAI | < 0.001 | |||
Q1 | 3679 (26%) | 3361 (26%) | 318 (21%) | |
Q2 | 3679 (26%) | 3316 (26%) | 363 (22%) | |
Q3 | 3678 (25%) | 3263 (24%) | 415 (25%) | |
Q4 | 3679 (24%) | 3196 (23%) | 483 (32%) | |
LAP | < 0.001 | |||
Q1 | 3679 (27%) | 3476 (28%) | 203 (14%) | |
Q2 | 3679 (25%) | 3299 (25%) | 380 (23%) | |
Q3 | 3678 (24%) | 3215 (24%) | 463 (27%) | |
Q4 | 3679 (24%) | 3146 (23%) | 533 (36%) |
