Table 2.
Characteristics of the men by clinical cutoffs of serum 25(OH)D (ng/ml)
| Caucasians | African Ancestery | |||||||
|---|---|---|---|---|---|---|---|---|
|
| ||||||||
| Deficient (<20) N=70 | Insufficient (20–<30) N=214 | Sufficient (≥30) N=162 | P-value | Deficient (<20) N=22 | Insufficient (20–<30) N=122 | Sufficient (≥30) N=352 | P-value | |
| Age, mean (SD), yrs | 77.5 ± 5.1 | 76.9 ± 4.8 | 76.7 ± 4.8 | 0.581 | 72.8 ± 7.5 | 72.1 ± 6.4 | 71.4 ± 5.7 | 0.339 |
| BMI, mean (SD), kg/m2 | 29.0 ± 4.6 | 28.8 ± 4.1 | 27.8 ± 4.0 | 0.022 | 27.1 ± 4.5 | 28.3 ± 4.9 | 26.9 ± 10.3 | 0.347 |
| Season of blood draw, % | 0.001 | 0.599 | ||||||
| Winter | 38.6 | 25.2 | 16.7 | 40.9 | 36.1 | 29.5 | ||
| Spring | 21.4 | 31.3 | 22.8 | 22.7 | 18.9 | 20.2 | ||
| Summer | 14.3 | 23.4 | 31.5 | 13.7 | 22.1 | 20.2 | ||
| Fall | 25.7 | 20.1 | 29.0 | 22.7 | 22.9 | 30.1 | ||
| Attended college, % | 48.6 | 50.9 | 40.7 | 0.139 | 4.6 | 5.7 | 3.1 | 0.346 |
| Average walk time per day,% | 0.606 | 0.603 | ||||||
| ≤1 hour | 55.7 | 43.9 | 43.8 | 95.5 | 82.0 | 85.0 | ||
| >1 hour | 44.3 | 56.1 | 56.2 | 4.5 | 18.0 | 15.0 | ||
| Caffeine intake, median (IQR), mg/day | 272.0 (136.0–408.0) | 192.0 (0.0–368.0) | 140.0 (0.0–408.0) | 0.164 | 75.0 (45.0–150.0) | 100.0 (45.0–150.0) | 100.0 (45.0–150.0) | 0.682 |
| Alcohol, median (IQR), drinks/week | 0.5 (0.0–4.0) | 0.6 (0.0–6.0) | 0.5 (0.0–6.0) | 0.706 | 0.0 (0.0–1.0) | 0.0 (0.0–1.0) | 0.0 (0.0–1.0) | 0.289 |
| Smoking currently, % | 5.7 | 2.3 | 4.3 | 0.326 | 9.1 | 4.9 | 6.3 | 0.609 |
| Dietary calcium, mean (SD), mg/day | 727.0 ± 333.5 | 792.6 ± 360.7 | 823.4 ± 357.3 | 0.167 | 389.2 ± 198.3 | 443.1 ± 201.2 | 440.7 ± 213.5 | 0.520 |
| Supplemental calcium, % | 44.3 | 65.0 | 72.8 | 0.002 | 23.8 | 31.3 | 28.3 | 0.730 |
| Health good or excellent, % | 84.3 | 89.7 | 90.7 | 0.330 | 81.8 | 82.0 | 82.1 | 0.999 |
| History of any fracture, % | 55.7 | 51.4 | 58.6 | 0.371 | 27.3 | 8.4 | 13.7 | 0.042 |
| Diabetes, % | 24.3 | 19.6 | 17.9 | 0.532 | 31.8 | 36.1 | 33.5 | 0.855 |
| Hypertension, % | 61.4 | 51.9 | 50.6 | 0.290 | 47.3 | 42.2 | 47.3 | 0.525 |
| Myocardial Infarction, % | 15.7 | 21.0 | 9.9 | 0.014 | 4.6 | 0.8 | 1.4 | 0.329 |
| Osteoporosis, % | 4.3 | 4.2 | 2.5 | 0.619 | 4.6 | 3.3 | 2.9 | 0.892 |
| Osteoarthritis, % | 27.1 | 25.7 | 27.8 | 0.899 | 18.2 | 4.2 | 5.3 | 0.051 |
| Rheumatoid arthritis, % | 14.3 | 5.1 | 5.6 | 0.023 | 4.6 | 5.8 | 2.9 | 0.204 |