Table 1.
Baseline Characteristics According to BMI Categories
| Normal Weight | Overweight | Obese | P Value | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AF (n=3613) | No AF (n=29 212) | AF (n=3403) | No AF (n=24 681) | AF (n=2776) | No AF (n=17 632) | ||||||||
| N | % | N | % | N | % | N | % | N | % | N | % | ||
| Demographics | |||||||||||||
| Age, mean (SD) | 68 | 6.2 | 63 | 7.4 | 68 | 6.1 | 63 | 7.3 | 67 | 6.3 | 62 | 7 | <0.001 |
| Race/ethnicity | <0.001 | ||||||||||||
| White | 3396 | 94 | 25 449 | 87.1 | 3118 | 91.6 | 20 421 | 82.7 | 2459 | 88.6 | 13 454 | 76.3 | |
| African American | 75 | 2.1 | 1108 | 3.8 | 150 | 4.4 | 2052 | 8.3 | 218 | 7.9 | 2733 | 15.5 | |
| Hispanic | 29 | 0.8 | 833 | 2.9 | 47 | 1.4 | 1086 | 4.4 | 48 | 1.7 | 893 | 5.1 | |
| American Indian | 11 | 0.3 | 85 | 0.3 | 7 | 0.2 | 91 | 0.4 | 13 | 0.5 | 124 | 0.7 | |
| Asian/Pacific Islander | 75 | 2.1 | 1349 | 4.6 | 36 | 1.1 | 666 | 2.7 | 8 | 0.3 | 181 | 1.0 | |
| Other/unknown | 27 | 0.7 | 388 | 1.3 | 45 | 1.3 | 365 | 1.5 | 30 | 1.1 | 247 | 1.4 | |
| Income <$20 000 | 434 | 12 | 2991 | 10.2 | 519 | 15.3 | 3455 | 14 | 662 | 23.8 | 3440 | 19.5 | <0.001 |
| College degree or higher | 1676 | 46.4 | 14 571 | 49.9 | 1371 | 40.3 | 10 234 | 41.5 | 876 | 31.6 | 5885 | 33.4 | <0.001 |
| Medical history | |||||||||||||
| Hypertension | 913 | 25.3 | 4209 | 14.4 | 1242 | 36.5 | 5935 | 24 | 1413 | 50.9 | 6507 | 36.9 | <0.001 |
| Diabetes mellitus | 77 | 2.1 | 388 | 1.3 | 155 | 4.6 | 795 | 3.2 | 367 | 13.2 | 1429 | 8.1 | <0.001 |
| Hyperlipidemia | 535 | 14.8 | 3107 | 10.6 | 685 | 20.1 | 4069 | 16.5 | 566 | 20.4 | 2973 | 16.9 | <0.001 |
| Coronary artery disease | 195 | 5.4 | 509 | 1.7 | 238 | 7 | 686 | 2.8 | 238 | 8.6 | 626 | 3.6 | <0.001 |
| MI | 122 | 3.4 | 342 | 1.2 | 157 | 4.6 | 452 | 1.8 | 178 | 6.4 | 470 | 2.7 | <0.001 |
| CABG/PTCA | 125 | 3.5 | 284 | 1 | 145 | 4.3 | 414 | 1.7 | 139 | 5 | 326 | 1.8 | <0.001 |
| Stroke | 65 | 1.8 | 268 | 0.9 | 63 | 1.9 | 305 | 1.2 | 74 | 2.7 | 299 | 1.7 | <0.001 |
| Heart failure | 41 | 1.1 | 78 | 0.3 | 47 | 1.4 | 119 | 0.5 | 73 | 2.6 | 163 | 0.9 | <0.001 |
| Peripheral arterial disease | 106 | 2.9 | 350 | 1.2 | 134 | 3.9 | 395 | 1.6 | 139 | 5 | 478 | 2.7 | <0.001 |
| Habits | |||||||||||||
| Physical activity (MET‐h/week), mean (SD) | 15.9 | 14.7 | 16.9 | 15.6 | 13 | 13.3 | 13.6 | 13.9 | 8.7 | 11.3 | 9.5 | 11.9 | <0.001 |
| Smoking | 246 | 6.8 | 1969 | 6.7 | 182 | 5.3 | 1506 | 6.1 | 110 | 4 | 972 | 5.5 | <0.001 |
| Alcohol use | 2707 | 74.9 | 22 010 | 75.3 | 2426 | 71.3 | 17 570 | 71.2 | 1637 | 59 | 10 873 | 61.7 | <0.001 |
All values represent the total and percentage of participants, unless otherwise indicated. P value is for the comparison of all subjects across 3 different BMI categories using ANOVA. BMI indicates body mass index; CABG, coronary artery bypass graft; MET, metabolic equivalent task; MI, myocardial infarction; PTCA, percutaneous transluminal coronary angioplasty.