Table 1.
Characteristics of 1495 Women at the SOF Year 20 Examination Overall and by Mobility Phenotype
| Characteristic | Overall | Good Mobility | Intermediate Mobility | Poor Mobility | |
|---|---|---|---|---|---|
| (n = 1,495) | (n = 384) | (n = 799) | (n = 312) | p-Value | |
| Age, years, mean (SD) | 87.6 (3.3) | 86.5 (3.1) | 87.7 (3.2) | 88.8 (3.6) | <.001 |
| African American, n (%) | 173 (11.6) | 55 (14.3) | 80 (10.0) | 38 (12.2) | .15 |
| Education, years, mean (SD) | 12.8 (2.6) | 13.0 (2.6) | 12.9 (2.6) | 12.3 (2.4) | <.001 |
| Health status, fair/poor/very poor, n (%) | 340 (22.8) | 35 (9.2) | 189 (23.7) | 116 (37.5) | <.001 |
| Hospitalization in year prior to Year 20 visit, n (%) | 401 (26.9) | 64 (16.7) | 223 (27.9) | 114 (36.9) | <.001 |
| Past smoker, n (%) | 473 (37.1) | 110 (28.7) | 268 (33.6) | 95 (30.7) | .63 |
| Current smoker, n (%) | 30 (2.0) | 10 (2.6) | 14 (1.8) | 6 (1.9) | |
| Comorbidity score (0–9), mean (SD) | 1.4 (1.2) | 0.9 (1.0) | 1.5 (1.2) | 1.9 (1.2) | <.001 |
| Walks for exercise, n (%) | 606 (41.6) | 210 (55.6) | 342 (43.9) | 54 (18.0) | <.001 |
| ≥1 ADL* difficulty, n (%) | 330 (22.4) | 15 (3.9) | 140 (17.8) | 175 (58.0) | <.001 |
| GDS score (0–15), mean (SD) | 2.5 (2.4) | 1.5 (1.7) | 2.6 (2.4) | 3.8 (2.7) | <.001 |
| BMI, kg/m2, mean (SD) | 26.5 (4.9) | 25.9 (4.2) | 26.5 (4.8) | 27.2 (5.8) | .003 |
| Mild cognitive impairment, n (%) | 354 (23.7) | 84 (21.9) | 192 (24.0) | 78 (25.0) | <.001 |
| Dementia, n (%) | 268 (17.9) | 25 (6.5) | 126 (15.8) | 117 (37.5) |
Notes: ADL = Activities of Daily Living; BMI, body mass index; GDS = Geriatric Depression scale; SOF = Study of Osteoporotic Fractures.
*ADLs assessed were bathing, dressing, and transferring.