Table 1 Baseline characteristics based on car tertiles in the national health and nutrition examination survey, 1999–2010
Characteristic | All | No. of participants by CAR a | P value | ||
|---|---|---|---|---|---|
Low | Medium | High | |||
Overall | 2232 | 739 | 747 | 746 | Â |
Age (year),Mean (SD) | 68.7 (11.6) | 68.4(11.6) | 69.7(11.3) | 67.9(11.7) | .012 |
Sex, n (%) |  |  |  |  |  < .001 |
 Male | 1122 (50.3) | 423 (57.2) | 369 (49.4) | 330 (44.2) |  |
 Female | 1110 (49.7) | 316 (42.8) | 378 (50.6) | 416 (55.8) |  |
Race and ethnicity, n (%) |  |  |  |  |  < .001 |
 Non-Hispanic White | 1727 (77.4) | 597 (80.8) | 596 (79.8) | 534 (71.6) |  |
 Non-Hispanic Black | 255 (11.4) | 64 (8.7) | 73 (9.8) | 118 (15.8) |  |
 Mexican American | 147 (6.6) | 44 (6.0) | 46 (6.2) | 57 (7.6) |  |
 Other b | 103 (4.6) | 34 (4.6) | 32 (4.3) | 37 (5.0) |  |
Marital status, n (%) | Â | Â | Â | Â | .008 |
 Married or living with a partner | 1413 (63.3) | 495 (67.0) | 476 (63.7) | 442 (59.2) |  |
 Living alone | 819 (36.7) | 244 (33.0) | 271 (36.3) | 304 (40.8) |  |
Family poverty income ratio, n (%) |  |  |  |  |  < .001 |
 < 1.3 | 435 (19.5) | 98 (13.3) | 151 (20.2) | 186 (24.9) |  |
 1.3 to 3.5 | 991 (44.4) | 310 (41.9) | 333 (44.6) | 348 (46.6) |  |
 ≥ 3.5 | 806 (36.1) | 331 (44.8) | 263 (35.2) | 212 (28.4) |  |
Educational level, n (%) |  |  |  |  |  < .001 |
 Less than high school | 578 (25.9) | 160 (21.7) | 189 (25.3) | 229 (30.7) |  |
 High school or equivalent | 546 (24.5) | 173 (23.4) | 190 (25.4) | 183 (24.5) |  |
 Above high school | 1108 (49.6) | 406 (54.9) | 368 (49.3) | 334 (44.8) |  |
Smoking status, n (%) | Â | Â | Â | Â | .013 |
 Never | 956 (42.8) | 347 (47.0) | 308 (41.2) | 301 (40.3) |  |
 Former | 988 (44.3) | 317 (42.9) | 340 (45.5) | 331 (44.4) |  |
 Current | 288 (12.9) | 75 (10.1) | 99 (13.3) | 114 (15.3) |  |
Alcohol drinking status, n (%) |  |  |  |  |  < .001 |
 Never | 327 (14.7) | 90 (12.2) | 98 (13.1) | 139 (18.6) |  |
 Former | 665 (29.8) | 178 (24.1) | 226 (30.3) | 261 (35.0) |  |
 Current | 1240 (55.6) | 471 (63.7) | 423 (56.6) | 346 (46.4) |  |
HEI-2015, Mean (SD) | 55.9(12.9) | 58.0 (13.1) | 55.6(12.9) | 54.3(12.4) |  < .001 |
Body mass index (kg/m2), n (%) |  |  |  |  |  < .001 |
 < 25 | 650 (29.1) | 309 (41.8) | 190 (25.4) | 151 (20.2) |  |
 25 to 30 | 862 (38.6) | 300 (40.6) | 319 (42.7) | 243 (32.6) |  |
 ≥ 30 | 720 (32.3) | 130 (17.6) | 238 (31.9) | 352 (47.2) |  |
Diabetes, n (%) |  |  |  |  |  < .001 |
 No | 1678 (75.2) | 581 (78.6) | 577 (77.2) | 520 (69.7) |  |
 Yes | 554 (24.8) | 158 (21.4) | 170 (22.8) | 226 (30.3) |  |
Cardiovascular disease, n (%) |  |  |  |  |  < .001 |
 No | 1637 (73.3) | 568 (76.9) | 559 (74.8) | 510 (68.4) |  |
 Yes | 595 (26.7) | 171 (23.1) | 188 (25.2) | 236 (31.6) |  |
Hypertension, n (%) | Â | Â | Â | Â | .001 |
 No | 749 (33.6) | 284 (38.4) | 245 (32.8) | 220 (29.5) |  |
 Yes | 1483 (66.4) | 455 (61.6) | 502 (67.2) | 526 (70.5) |  |
Physical Activity, (MET-min/week) |  |  |  |  |  < .001 |
 None (inactive) | 759 (34.0) | 186 (25.2) | 248 (33.2) | 325 (43.6) |  |
 < 600 (insufficiently active) | 626 (28.0) | 223 (30.2) | 223 (29.9) | 180 (24.1) |  |
 ≥ 600 (sufficiently active) | 847 (37.9) | 330 (44.7) | 276 (36.9) | 241 (32.3) |  |