Table 2. Descriptive baseline characteristics by hip and non-spine fracture status.
| Hip fracture | Any non-spine fracture | |||
|---|---|---|---|---|
|
| ||||
| No (n = 2556) | Yes (n = 84) | No (n = 2393) | Yes (n = 247) | |
| Age, mean ± SD, yrs | 74.6 ± 2.8 | 76.4 ± 2.8 | 74.6 ± 2.8 | 75.3 ± 3.0 |
| Female gender, % | 48.5 | 60.7 | 46.7 | 70.5 |
| Black race, % | 41.4 | 28.6 | 42.3 | 28.3 |
| Education < high school, % | 24.8 | 25.0 | 25.6 | 17.0 |
| BMI, mean ± SD, kg/m2 | 27.4 ± 4.8 | 25.8 ± 4.3 | 27.4 ± 4.8 | 26.7 ± 4.8 |
| Season of blood draw, % | ||||
| Winter | 25.5 | 29.8 | 25.4 | 28.3 |
| Spring | 32.1 | 23.8 | 32.1 | 29.2 |
| Summer | 17.3 | 19.0 | 17.3 | 17.4 |
| Fall | 25.1 | 27.4 | 25.2 | 25.1 |
| Pack-years exposure to cigarettes, median (IQR) | 4.0 (0.0 - 30.0) | 4.0 (0.0 - 36.5) | 4.5 (0.0 - 30.0) | 1.5 (0.0 - 30.0) |
| Current alcohol consumption, % | ||||
| None | 65.0 | 71.1 | 65.1 | 65.8 |
| < 1 drink/week | 6.0 | 6.0 | 6.1 | 4.9 |
| 1-3 drinks/week | 20.1 | 18.1 | 19.6 | 23.9 |
| 4+ drinks/week | 8.9 | 4.8 | 9.2 | 5.4 |
| Dietary calcium intake, median (IQR), mg/d | 717 (515 - 973) | 736 (532 - 995) | 719 (517 - 978) | 716 (501 - 940) |
| Supplemental calcium intake, % yes | 18.3 | 25.0 | 17.4 | 28.7 |
| Supplemental vitamin D intake, % yes | 8.3 | 13.1 | 8.1 | 12.2 |
| Time spent walking, median (IQR), minutes/week | 40 (0 - 180) | 60 (0 - 195) | 40 (0 - 180) | 36 (0 - 150) |
| Any fracture after age 45, % yes | 20.7 | 33.3 | 20.0 | 32.4 |
| Clinical Comorbidity Index (0-7), mean ± SD | 0.79 ± 0.88 | 1.06 ± 0.97 | 0.78 ± 0.87 | 0.95 ± 0.99 |
| Any falls in past 12 months, % yes | 23.1 | 28.9 | 22.7 | 28.9 |
| HABC Performance Score (0-4), mean ± SD | 2.2 ± 0.5 | 2.1 ± 0.6 | 2.2 ± 0.5 | 2.1 ± 0.6 |
| IL-6, median (IQR), pg/ml | 2.4 (1.5 - 4.1) | 2.7 (1.7 - 4.4) | 2.4 (1.5 - 4.1) | 2.4 (1.6 - 4.0) |
| Hip aBMD, mean ± SD, g/cm2 | 0.90 ± 0.16 | 0.74 ± 0.14 | 0.91 ± 0.16 | 0.78 ± 0.14 |
| Glomerular Filtration Rate, mean ± SD | 72.7 ± 16.1 | 70.2 ± 16.6 | 72.9 ± 16.2 | 69.8 ± 15.5 |
| Serum Calcium, mean ± SD, mg/dL | 8.9 ± 0.43 | 8.9 ± 0.42 | 8.9 ± 0.43 | 8.9 ± 0.41 |
| 25(OH)D, median (IQR), ng/ml | 24.3 (17.8 – 31.9) | 26.3 (15.9 – 31.9) | 24.3 (17.9 – 31.8) | 24.7 (16.5 – 32.2) |
| PTH, median (IQR), pg/ml | 33.8 (25.2 – 45.9) | 34.3 (24.8 – 46.9) | 33.8 (25.2 – 45.7) | 34.3 (24.9 – 47.0) |
Bold indicates p-value < 0.05