Table 1 Baseline characteristics, BMI changes, and BMI variability of study participants (n = 45,076).
From: Body mass index trajectories and the risk for Alzheimer’s disease among older adults
Men (N = 23,298) | Women (N = 21,778) | p-value | |
|---|---|---|---|
N (%) | N (%) | ||
Age (years) | |||
60–69 | 19,222 (82.5) | 17,960 (82.5) | 0.921 |
70–79 | 4,076 (17.5) | 3,818 (17.5) | |
Insurance premium (deciles) | |||
≤ 2 (low) | 4437 (19.0) | 4180 (19.2) | 0.008 |
3–5 | 5693 (24.4) | 5069 (23.3) | |
6–8 | 6543 (28.1) | 6080 (27.9) | |
9–10 (high) | 6625 (28.4) | 6449 (29.6) | |
BMI (kg/m2) | |||
< 18.5 | 776 (3.3) | 527 (2.4) | < 0.001 |
18.5–22.9 | 9063 (38.9) | 6845 (31.4) | |
23–24.9 | 6512 (28.0) | 5560 (25.5) | |
≥ 25 | 6947 (29.8) | 8846 (40.6) | |
Smoking status | |||
Non-smoker | 16,351 (70.2) | 21,194 (97.3) | < 0.001 |
Current smoker | 6947 (29.8) | 584 (2.7) | |
Alcohol consumption | |||
Non-drinker | 10,505 (45.1) | 19,644 (90.2) | < 0.001 |
Moderate drinker | 9555 (41.0) | 1841 (8.5) | |
Heavy drinker | 3238 (13.9) | 293 (1.3) | |
Regular exercise | |||
No | 12,526 (53.8) | 15,724 (72.2) | < 0.001 |
Yes | 10,772 (46.2) | 6054 (27.8) | |
Comorbidities | |||
Hypertension | 6810 (29.2) | 7475 (34.3) | < 0.001 |
Diabetes mellitus | 2553 (11.0) | 2587 (11.9) | < 0.001 |
Dyslipidemia | 1675 (7.2) | 2300 (10.6) | < 0.001 |
2-year BMI changes | |||
Decrease of > 15.0% | 156 (0.7) | 238 (1.1) | < 0.001 |
Decrease of 10.1–15.0% | 441 (1.9) | 595 (2.7) | |
Decrease of 5.1–10.0% | 2676 (11.5) | 2808 (12.9) | |
Stable ± 5.0% | 17,085 (73.3) | 14,941 (68.6) | |
Increase of 5.1–10.0% | 2251 (9.7) | 2344 (10.8) | |
Increase of 10.1–15.0% | 455 (2.0) | 558 (2.6) | |
Increase of > 15.0% | 234 (1.0) | 294 (1.3) | |
4-year BMI changes | |||
Decrease of > 15.0% | 240 (1.0) | 328 (1.5) | < 0.001 |
Decrease of 10.1–15.0% | 659 (2.8) | 779 (3.6) | |
Decrease of 5.1–10.0% | 3,075 (13.2) | 3,057 (14.0) | |
Stable ± 5.0% | 15,394 (66.1) | 13,632 (62.6) | |
Increase of 5.1–10.0% | 2871 (12.3) | 2780 (12.8) | |
Increase of 10.1–15.0% | 736 (3.2) | 817 (3.8) | |
Increase of > 15.0% | 323 (1.4) | 385 (1.8) | |
BMI variability | |||
Average successive variabilitya (kg/m2) | 1.44 ± 1.23 | 1.63 ± 1.32 | < 0.001 |
