Table 1 Descriptive characteristics of participants by body mass index
Characteristics | Body mass index (kg/m2) | |||||||
|---|---|---|---|---|---|---|---|---|
NHANES (N =6062) | SHARE (N =23,875) | |||||||
18.5–24.9 | 25.0–29.9 | 30.0–34.9 | ≥35.0 | 18.5–24.9 | 25.0–29.9 | 30.0–34.9 | ≥35.0 | |
N (%) | 1656 (27.6) | 2339 (37.7) | 1264 (20.6) | 803 (14.1) | 9397 (39.4) | 10,197 (42.7) | 3371 (14.1) | 910 (3.8) |
Age (year), mean ±SD | 64.3 ±11.2 | 64.8 ±10.3 | 62.7 ±9.6 | 60.9 ±8.4 | 65.1 ±10.7 | 65.0 ±9.7 | 65.1 ±9.5 | 63.2 ±9.0 |
Sex, female, N (%) | 899 (62.0) | 1002 (45.8) | 621 (46.7) | 514 (64.3) | 5672 (61.6) | 4774 (47.6) | 1843 (56.0) | 605 (67.1) |
Education, N (%) | ||||||||
 Less than high school | 527 (20.5) | 774 (20.5) | 427 (21.9) | 272 (20.7) | 4396 (47.5) | 5495 (53.3) | 2037 (60.8) | 579 (63.8) |
 High school | 400 (26.0) | 542 (25.9) | 323 (27.3) | 193 (28.1) | 2529 (28.9) | 2656 (28.9) | 848 (27.4) | 205 (24.2) |
 Some college/associated education | 369 (24.3) | 564 (28.7) | 284 (26.4) | 226 (32.8) | 289 (1.9) | 228 (1.6) | 81 (1.4) | 22 (1.2) |
 College graduate or more | 355 (29.1) | 454 (24.8) | 229 (24.2) | 112 (18.3) | 2183 (21.7) | 1818 (16.2) | 405 (10.4) | 104 (10.8) |
Annual household income (USD), N (%) | ||||||||
 0–19,999 | 449 (20.6) | 534 (16.0) | 330 (18.8) | 203 (20.8) | 2644 (31.3) | 3229 (34.2) | 1249 (40.8) | 382 (45.9) |
 20,000–44,999 | 505 (30.3) | 772 (32.0) | 383 (31.7) | 268 (33.2) | 2909 (32.7) | 3196 (33.5) | 1037 (33.1) | 295 (32.4) |
 45,000–74,999 | 287 (22.5) | 436 (24.9) | 240 (23.6) | 152 (25.0) | 2100 (20.1) | 2151 (19.2) | 639 (15.8) | 133 (13.7) |
 ≥75,000 | 283 (26.6)) | 421 (27.1) | 214 (25.9) | 121 (21.0) | 1743 (15.9) | 1621 (13.1) | 446 (10.4) | 101 (8.0) |
Marital status, N (%) | ||||||||
 Married | 963 (63.5) | 1529 (69.9) | 794 (67.9) | 473 (64.4) | 6587 (64.1) | 7640 (69.9) | 2423 (65.7) | 610 (59.9) |
 Widowed | 362 (16.0) | 441 (14.6) | 234 (15.3) | 133 (11.9) | 1483 (19.2) | 1432 (17.1) | 561 (21.1) | 146 (21.2) |
 Divorced or separated | 248 (15.9) | 289 (12.6) | 186 (13.3) | 144 (17.3) | 753 (8.7) | 660 (6.9) | 231 (7.2) | 99 (11.3) |
 Never married | 81 (4.5) | 77 (2.7) | 49 (3.2) | 53 (6.4) | 573 (8.0) | 466 (6.2) | 157 (6.0) | 55 (7.6) |
Full-time working, N (%) | 534 (43.4) | 860 (48.2) | 455 (47.5) | 300 (46.7) | 2878 (29.1) | 2938 (26.3) | 817 (20.4) | 213 (20.3) |
Smoking status, N (%) | ||||||||
 Never | 772 (47.0) | 1033 (44.6) | 583 (45.9) | 393 (48.5) | 4998 (56.2) | 5258 (54.5) | 1851 (59.8) | 526 (60.3) |
 Former | 531 (30.8) | 986 (40.9) | 491 (37.8) | 314 (39.0) | 4399 (43.8) | 4939 (45.5) | 1520 (40.2) | 384 (39.7) |
 Current | 350 (22.2) | 317 (14.5) | 190 (16.3) | 94 (12.5) | ||||
Frailty index score (baseline), median (IQR) and mean ±SD | 0.11 (0.06–0.20) 0.14 ±0.12 | 0.12 (0.06–0.20) 0.15 ±0.11 | 0.13 (0.08–0.23) 0.17 ±0.12 | 0.18 (0.11–0.29) 0.21 ±0.13 | 0.11 (0.06–0.19) 0.16 ±0.13 | 0.12 (0.06–0.19) 0.17 ±0.13 | 0.16 (0.09–0.26) 0.21 ±0.14 | 0.20 (0.19–0.32) 0.24 ±0.15 |
Frailty index score (follow-up), median (IQR) and mean ±SD | - | - | - | - | 0.13 (0.07–0.23) 0.18 ±0.15 | 0.13 (0.07–0.23) 0.21 ±0.14 | 0.20 (0.11–0.32) 0.25 ±0.16 | 0.26 (0.16–0.36) 0.29 ±0.15 |
10-year mortality rate | 655 (28.8) | 790 (24.1) | 363 (22.8) | 225 (25.3) | 1630 (17.1) | 1579 (14.4) | 573 (17.5) | 156 (17.5) |