Table 1.
Patient demographic and physical characteristics
| Characteristic | Overall | US | Canada |
|---|---|---|---|
| N = 935 | N = 632 | N = 303 | |
| Age, years | |||
| Mean (SD) | 70.8 (9.9) | 71.9 (10.0) | 68.5 (9.2) |
| <65, n (%) | 267 (28.6) | 152 (24.1) | 115 (38.0) |
| 65 to <75, n (%) | 318 (34.0) | 216 (34.2) | 102 (33.7) |
| ≥75, n (%) | 350 (37.4) | 264 (41.8) | 86 (28.4) |
| Race or ethnicity, n (%) | |||
| White or Caucasian | 886 (94.8) | 601 (95.1) | 285 (94.1) |
| Asian | 25 (2.7) | 9 (1.4) | 16 (5.3) |
| Black or African American | 9 (1.0) | 9 (1.4) | 0 (0.0) |
| Othera | 15 (1.6) | 13 (2.1) | 2 (0.7) |
| Marital status, n (%) | |||
| Married | 512 (54.8) | 320 (50.6) | 192 (63.4) |
| Never married | 46 (4.9) | 26 (4.1) | 20 (6.6) |
| Divorced/separated/widowed | 373 (39.9) | 282 (44.6) | 91 (30.0) |
| Missing | 4 (0.4) | 4 (0.6) | 0 (0.0) |
| Body mass index | |||
| Mean (SD) | 25.7 (5.5) | 25.4 (5.7) | 26.2 (5.0) |
| ≤25 kg/m2, n (%) | 427 (45.7) | 313 (49.5) | 114 (37.6) |
| >25 kg/m2, n (%) | 379 (40.5) | 237 (37.5) | 142 (46.9) |
| Missing, n (%) | 129 (13.8) | 82 (13.0) | 47 (15.5) |
| Modified Wolfe comorbidity index, median (Q1, Q3) | 2.0 (1.0, 3.0) | 2.0 (1.0, 3.0) | 2.0 (1.0, 3.0) |
| Number of prescription medications taken at baseline, median (Q1, Q3) | 7.0 (4.0, 10.0) | 8.0 (5.0, 11.0) | 5.0 (3.0, 7.0) |
| Baseline bone mineral density | |||
| Femoral neck T-score | |||
| Mean (SD) | −2.18 (0.88) | −2.33 (0.77) | −1.87 (1.01) |
| ≤−2.5, n (%) | 351 (37.5) | 272 (43.0) | 79 (26.1) |
| >−2.5, n (%) | 508 (54.3) | 313 (49.5) | 195 (64.4) |
| Missing, n (%) | 76 (8.1) | 47 (7.4) | 29 (9.6) |
| Lumbar spine T-score | |||
| Mean (SD) | −2.00 (1.31) | −1.93 (1.34) | −2.13 (1.24) |
| ≤−2.5, n (%) | 357 (38.2) | 228 (36.1) | 129 (42.6) |
| >−2.5, n (%) | 492 (52.6) | 341 (54.0) | 151 (49.8) |
| Missing, n (%) | 86 (9.2) | 63 (10.0) | 23 (7.6) |
SD standard deviation, Q1, Q3, 25th and 75th percentile, US United States
aOther race includes mixed race, American Indian or Alaska Native, Native Hawaiian or other Pacific Islander, or other (not specified)