Table 2.
Baseline characteristics of the study population
| Characteristic | Cases (n = 200) | Controls (n = 2678) | OR* (95% CI) | Subjects with missing values (%) |
|---|---|---|---|---|
| Sex | ||||
| Women | 174 (87%) | 1884 (70%) | 1.68 (1.11, 2.54) | 0 |
| Age, year† | 76.6 ± 8.51 | 74.9 ± 8.04 | 1.04 (1.02, 1.06) | 0 |
| BMI, kg m−2† | 26.3 ± 3.90 | 26.5 ± 3.89 | 0.97 (0.94, 1.01) | 14 |
| Femoral neck BMD† | 0.74 ± 0.14 | 0.81 ± 0.14 | 0.04 (0.01, 0.15) | 29 |
| History of fracture (in 5 years before baseline) | 37 (19%) | 374 (14%) | 1.14 (0.79, 1.63) | 8 |
| Falling ≥1 × /month | 8 (4%) | 76 (3%) | 1.68 (0.83, 3.43) | 4 |
| Current smoking | 41 (21%) | 509 (19%) | 1.26 (0.87, 1.83) | 5 |
| Alcohol intake >2 g day−1 | 57 (29%) | 830 (31%) | 1.16 (0.81, 1.67) | 35 |
| Dementia | 18 (14%) | 186 (7%) | 1.77 (1.05, 2.00) | 6 |
| Parkinsonism‡ | 9 (5%) | 68 (3%) | 1.76 (0.90, 3.44) | <1 |
| Lower-limb disability score† | 0.83 ± 0.79 | 0.63 ± 0.74 | 1.12 (0.91, 2.55) | 3 |
| Use of walking aid | 42 (21%) | 430 (16%) | 0.92 (0.80, 1.07) | 9 |
*
OR for fracture, age- and sex-adjusted.
†
Mean ± SD.
‡
Includes Parkinson's disease. BMD, bone mineral density; BMI, body mass index.