Table 2.
Comparison of participants’ demographics between BMI categories
| Parameters | BMI categories | ||
| Underweight n=2684 |
Normal weight n=17 667 |
Overweight and obese n=4340 |
|
| Age at examination (years old) | 80.8±4.8 (75–103) *† | 79.4±4.2 (75–103)‡ | 78.9±4.0 (75–99) |
| Age categories, n (%) | |||
| 75–79/80–84/85 | 1291 (48.1)/828 (30.8)/ 565 (21.1)*† |
10 775 (60.9)/4691 (26.6)/ 2201 (12.5)‡ |
2866 (66.1)/1035 (23.8)/ 439(10.1) |
| Sex; males/females, n (%) | 910 (33.9)/1774 (66.1)*† | 7980 (45.2)/9687 (54.8) | 1963 (45.2)/2377 (54.8) |
| BMI (kg/m2) | 17.2±1.0 (11.6–18.4) *† | 21.8±1.7 (18.5–24.9)‡ | 26.9±1.9 (25–54.2) |
| CCI | 1.6±1.6 (0–10)† | 1.7±1.7 (0–11)‡ | 1.9±1.8 (0–10) |
| CCI categories, n (%) | |||
|
Low (=0)/medium (=1–2)/ High (=3–4)/very high (≥5) |
481 (17.9)/1426 (53.1)/ 574 (21.4)/203 (7.6)† |
3425 (19.4)/9.349 (52.9)/ 3759 (21.3)/1134 (6.4)‡ |
804 (18.5)/2207 (50.9)/ 998 (23.0)/331 (7.6) |
| Smoking (yes), n (%) | 266 (9.9)*† | 1346 (7.6)‡ | 279 (6.4) |
| Use of alcohol (yes), n (%) | 786 (29.3)*† | 6939 (39.3) | 1719 (39.6) |
| Osteoporosis, n (%) | 537 (20)*† | 2806 (15.9) | 626 (14.4) |
| Follow-up duration (year) | 6.4±2.0 (0.1–8.0) *† | 6.9±1.5 (0.1–8.0)‡ | 7.1±1.3 (0.1–8.0) |
Continuous values are expressed as mean±SD (range).
*P <0.05 for significantly different between underweight and normal weight.
†P <0.05 for significantly different between underweight and overweight and obese.
‡P <0.05 for significantly different between normal weight and overweight and obese.
BMI, body mass index; CCI, Charlson Comorbidity Index.