Table 1.
Demographics and health history differences across BMI classes among all adults
| BMI group | Total | Normal (18.5 to < 25) | Overweight (25 to < 30) | Obese I (30 to < 35) | Obese II (35 to < 40) | Obese III (40+) |
|---|---|---|---|---|---|---|
| (n = 15,893) | (n = 11,960) | (n = 4423) | (n = 1269) | (n = 707) | ||
| Categorical covariates | ||||||
| Region: n (%) | ||||||
| North | 768 (2.2%) | 365 (2.3%) | 260 (2.2%) | 100 (2.3%) | 30 (2.4%) | 13 (1.8%) |
| Northeast | 4885 (14.3%) | 2381 (15.0%) | 1671 (14.0%) | 586 (13.3%) | 155 (12.2%) | 92 (13.0%) |
| Center-West | 2391 (7.0%) | 1122 (7.1%) | 858 (7.2%) | 292 (6.6%) | 80 (6.3%) | 39 (5.5%) |
| Southeast | 20,420 (59.6%) | 9269 (58.4%) | 7181 (60.1%) | 2732 (61.8%) | 793 (62.5%) | 445 (63.0%) |
| South | 5749 (16.8%) | 2733 (17.2%) | 1979 (16.6%) | 709 (16.0%) | 211 (16.6%) | 117 (16.6%) |
| Sex: n (%) | ||||||
| Male | 17,540 (51.2%) | 7410 (46.6%) | 6908 (57.8%) | 2372 (53.6%) | 545 (42.9%) | 305 (43.1%) |
| Female | 16,712 (48.8%) | 8483 (53.4%) | 5052 (42.2%) | 2051 (46.4%) | 724 (57.1%) | 402 (56.9%) |
| Race: n (%) | ||||||
| White | 21,916 (64.0%) | 10,025 (63.1%) | 7688 (64.3%) | 2903 (65.6%) | 828 (65.2%) | 472 (66.8%) |
| Black | 2714 (7.9%) | 1215 (7.6%) | 979 (8.2%) | 347 (7.8%) | 110 (8.7%) | 63 (8.9%) |
| Amarelo | 867 (2.5%) | 487 (3.1%) | 259 (2.2%) | 87 (2.0%) | 23 (1.8%) | 11 (1.6%) |
| Pardo | 8215 (24.0%) | 3878 (24.4%) | 2882 (24.1%) | 1023 (23.1%) | 283 (22.3%) | 149 (21.1%) |
| Indigena | 209 (0.6%) | 109 (0.7%) | 60 (0.5%) | 25 (0.6%) | 8 (0.6%) | 7 (1.0%) |
| Decline to answer | 331 (1.0%) | 179 (1.1%) | 92 (0.8%) | 38 (0.9%) | 17 (1.3%) | 5 (0.7%) |
| Education: n (%) | ||||||
| High school or less | 12,201 (35.6%) | 5654 (35.6%) | 4235 (35.4%) | 1564 (35.4%) | 461 (36.3%) | 287 (40.6%) |
| At least some college | 22,051 (64.4%) | 10,239 (64.4%) | 7725 (64.6%) | 2859 (64.6%) | 808 (63.7%) | 420 (59.4%) |
| Socioeconomic status: n (%) | ||||||
| A1–A2 [upper class] | 4351 (12.7%) | 1844 (11.6%) | 1634 (13.7%) | 612 (13.8%) | 172 (13.6%) | 89 (12.6%) |
| B1–B2 [middle class] | 19,321 (56.4%) | 8715 (54.8%) | 6905 (57.7%) | 2608 (64.4%) | 705 (55.6%) | 388 (54.9%) |
| C1 [lower middle class] | 6967 (20.3%) | 3382 (21.3%) | 2314 (19.3%) | 832 (18.8%) | 282 (22.2%) | 157 (22.2%) |
| C2 [skilled working class] | 2730 (8.0%) | 1449 (9.1%) | 850 (7.1%) | 283 (6.4%) | 92 (7.2%) | 56 (7.9%) |
| D [lower working class] | 812 (2.4%) | 469 (3.0%) | 231 (1.9%) | 83 (1.9%) | 15 (1.2%) | 14 (2.0%) |
| E [lowest income earners] | 71 (0.2%) | 34 (0.2%) | 26 (0.2%) | 5 (0.1%) | 3 (0.2%) | 3 (0.4%) |
| Marital status: n (%) | ||||||
| Single | 15,236 (44.5%) | 8169 (51.4%) | 4695 (39.3%) | 1574 (35.6%) | 500 (39.4%) | 298 (42.1%) |
| Married | 19,016 (55.5%) | 7724 (48.6%) | 7265 (60.7%) | 2849 (64.4%) | 769 (60.6%) | 409 (57.9%) |
| Exercise 20+ min ≥ 1 times in past month: n (%) | ||||||
| Exercise 0 times | 13,729 (40.1%) | 5938 (37.4%) | 4675 (39.1%) | 2039 (46.1%) | 676 (53.3%) | 401 (56.7%) |
| Exercise ≥ 1 times | 20,523 (59.9%) | 9955 (62.6%) | 7285 (60.9%) | 2384 (53.9%) | 593 (46.7%) | 306 (43.3% |
| Smoking status: n (%) | ||||||
| Currently smokes | 4290 (12.5%) | 2024 (12.7%) | 1515 (12.7%) | 504 (11.4%) | 159 (12.5%) | 88 (12.4%) |
| Trying to quit smoking | 2002 (5.8%) | 901 (5.7%) | 745 (6.2%) | 255 (5.8%) | 61 (4.8%) | 40 (5.7%) |
| Former smoker | 7762 (22.7%) | 3053 (19.2%) | 2838 (23.7%) | 1316 (29.8%) | 386 (30.4%) | 169 (23.9%) |
| Never smoked | 20,198 (59.0%) | 9915 (62.4%) | 6862 (57.4%) | 2348 (53.1%) | 663 (52.2%) | 410 (58.0%) |
| Alcohol consumption: n (%) | ||||||
| Alcohol ≤ 1 time | 28,914 (84.4%) | 13,606 (85.6%) | 9831 (82.2%) | 3726 (84.2%) | 1118 (88.1%) | 633 (89.5%) |
| Alcohol ≥ 2–3 times | 5338 (15.6%) | 2287 (14.4%) | 2129 (17.8%) | 697 (15.8%) | 151 (11.9%) | 74 (10.5%) |
| Labor force participation: n (%) | ||||||
| Not in labor force | 7949 (23.2%) | 3761 (23.7%) | 2730 (22.8%) | 1014 (22.9%) | 281 (22.1%) | 163 (23.1%) |
| In labor force | 26,303 (76.8%) | 12,132 (76.3%) | 9230 (77.2%) | 3409 (77.1%) | 988 (77.9%) | 544 (76.9%) |
| Continuous covariates | ||||||
| CCI: mean ± SD | 0.34 ± 0.91 | 0.30 ± 0.88 | 0.33 ± 0.86 | 0.40 ± 0.96 | 0.45 ± .96 | 0.53 ± 1.62 |
| Age: mean ± SD | 40.67 ± 15.44 | 38.22 ± 15.97 | 43.00 ± 15.15 | 42.88 ± 13.94 | 41.98 ± 13.17 | 39.95 ± 12.11 |
BMI body mass index, CCI Charlson comorbidity index, SD standard deviation