| . | Overall (N = 221) . | Female (N = 122) . | Male (N = 99) . |
|---|---|---|---|
| Age, years | 71 ± 4.7 | 69.9 ± 3.7 | 72.4 ± 5.5 |
| BMI, kg/m2 | 30.2 ± 4.5 | 31.5 ± 4.9 | 28.7 ± 3.3 |
| Total 25(OH)D, ng/mL | 20.4 ± 7.4 | 21.1 ± 8.2 | 19.5 ± 6.3 |
| Vitamin D binding protein, mg/L | 284.6 ± 34.9 | 289.83 ± 36.4 | 278.1 ± 32.1 |
| Albumin (g/L) | 44.1 ± 2.9 | 44.2 ± 3.2 | 44.1 ± 2.6 |
| Bioavailable 25(OH)D (Biklea), μg/L | 2.1 ± 0.8 | 2.2 ± 0.9 | 2.1 ± 0.7 |
| Bioavailable 25(OH)D (Vermeulena), μg/L | 2.2 ± 0.8 | 2.2 ± 0.9 | 2.1 ± 0.7 |
| Free 25(OH)D (Biklea), ng/L | 5.4 ± 2.0 | 5.5 ± 2.2 | 5.2 ± 1.7 |
| Free 25(OH)D (Vermeulena), ng/L | 5.4 ± 2.0 | 5.5 ± 2.3 | 5.3 ± 1.7 |
| PTH, pg/mL | 68 ± 32.6 | 68.1 ± 31.1 | 67.8 ± 34.4 |
| Calcium, mg/dL | 9.5 ± 0.4 | 9.5 ± 0.4 | 9.4 ± 0.4 |
| Calcium or vitamin D supplementation, N (%) | 22 (10%) | 21 (17.2%) | 1 (1%) |
| Creatinine, mg/dL | 0.8 ± 0.2 | 0.7 ± 0.1 | 0.9 0.2 |
| eGFRb, mL/min/1.73m2 | 81.34 ± 13.1 | 83.2 ± 12.8 | 79 ± 13.1 |
| . | Overall (N = 221) . | Female (N = 122) . | Male (N = 99) . |
|---|---|---|---|
| Age, years | 71 ± 4.7 | 69.9 ± 3.7 | 72.4 ± 5.5 |
| BMI, kg/m2 | 30.2 ± 4.5 | 31.5 ± 4.9 | 28.7 ± 3.3 |
| Total 25(OH)D, ng/mL | 20.4 ± 7.4 | 21.1 ± 8.2 | 19.5 ± 6.3 |
| Vitamin D binding protein, mg/L | 284.6 ± 34.9 | 289.83 ± 36.4 | 278.1 ± 32.1 |
| Albumin (g/L) | 44.1 ± 2.9 | 44.2 ± 3.2 | 44.1 ± 2.6 |
| Bioavailable 25(OH)D (Biklea), μg/L | 2.1 ± 0.8 | 2.2 ± 0.9 | 2.1 ± 0.7 |
| Bioavailable 25(OH)D (Vermeulena), μg/L | 2.2 ± 0.8 | 2.2 ± 0.9 | 2.1 ± 0.7 |
| Free 25(OH)D (Biklea), ng/L | 5.4 ± 2.0 | 5.5 ± 2.2 | 5.2 ± 1.7 |
| Free 25(OH)D (Vermeulena), ng/L | 5.4 ± 2.0 | 5.5 ± 2.3 | 5.3 ± 1.7 |
| PTH, pg/mL | 68 ± 32.6 | 68.1 ± 31.1 | 67.8 ± 34.4 |
| Calcium, mg/dL | 9.5 ± 0.4 | 9.5 ± 0.4 | 9.4 ± 0.4 |
| Calcium or vitamin D supplementation, N (%) | 22 (10%) | 21 (17.2%) | 1 (1%) |
| Creatinine, mg/dL | 0.8 ± 0.2 | 0.7 ± 0.1 | 0.9 0.2 |
| eGFRb, mL/min/1.73m2 | 81.34 ± 13.1 | 83.2 ± 12.8 | 79 ± 13.1 |
Abbreviations: 25(OH)D, 25-hydroxyvitamin D; BMI, body mass index; eGFR, estimated glomerular filtration rate; PTH, parathyroid hormone.
*Values are expressed as mean ± SD
aValues were derived from the Bikle equation using a spreadsheet supplied by the laboratory of Dr. Roger Bouillon (9).
beGFR was estimated using the CKD-EPI (Chronic Kidney Disease Epidemiology Collaboration) equation. (GFR = 141 * min(Scr/κ,1)α * max(Scr/κ, 1)-1.209 * 0.993Age * 1.018 [if female] * 1.159 [if black])
| . | Overall (N = 221) . | Female (N = 122) . | Male (N = 99) . |
|---|---|---|---|
| Age, years | 71 ± 4.7 | 69.9 ± 3.7 | 72.4 ± 5.5 |
| BMI, kg/m2 | 30.2 ± 4.5 | 31.5 ± 4.9 | 28.7 ± 3.3 |
| Total 25(OH)D, ng/mL | 20.4 ± 7.4 | 21.1 ± 8.2 | 19.5 ± 6.3 |
| Vitamin D binding protein, mg/L | 284.6 ± 34.9 | 289.83 ± 36.4 | 278.1 ± 32.1 |
| Albumin (g/L) | 44.1 ± 2.9 | 44.2 ± 3.2 | 44.1 ± 2.6 |
| Bioavailable 25(OH)D (Biklea), μg/L | 2.1 ± 0.8 | 2.2 ± 0.9 | 2.1 ± 0.7 |
| Bioavailable 25(OH)D (Vermeulena), μg/L | 2.2 ± 0.8 | 2.2 ± 0.9 | 2.1 ± 0.7 |
| Free 25(OH)D (Biklea), ng/L | 5.4 ± 2.0 | 5.5 ± 2.2 | 5.2 ± 1.7 |
| Free 25(OH)D (Vermeulena), ng/L | 5.4 ± 2.0 | 5.5 ± 2.3 | 5.3 ± 1.7 |
| PTH, pg/mL | 68 ± 32.6 | 68.1 ± 31.1 | 67.8 ± 34.4 |
| Calcium, mg/dL | 9.5 ± 0.4 | 9.5 ± 0.4 | 9.4 ± 0.4 |
| Calcium or vitamin D supplementation, N (%) | 22 (10%) | 21 (17.2%) | 1 (1%) |
| Creatinine, mg/dL | 0.8 ± 0.2 | 0.7 ± 0.1 | 0.9 0.2 |
| eGFRb, mL/min/1.73m2 | 81.34 ± 13.1 | 83.2 ± 12.8 | 79 ± 13.1 |
| . | Overall (N = 221) . | Female (N = 122) . | Male (N = 99) . |
|---|---|---|---|
| Age, years | 71 ± 4.7 | 69.9 ± 3.7 | 72.4 ± 5.5 |
| BMI, kg/m2 | 30.2 ± 4.5 | 31.5 ± 4.9 | 28.7 ± 3.3 |
| Total 25(OH)D, ng/mL | 20.4 ± 7.4 | 21.1 ± 8.2 | 19.5 ± 6.3 |
| Vitamin D binding protein, mg/L | 284.6 ± 34.9 | 289.83 ± 36.4 | 278.1 ± 32.1 |
| Albumin (g/L) | 44.1 ± 2.9 | 44.2 ± 3.2 | 44.1 ± 2.6 |
| Bioavailable 25(OH)D (Biklea), μg/L | 2.1 ± 0.8 | 2.2 ± 0.9 | 2.1 ± 0.7 |
| Bioavailable 25(OH)D (Vermeulena), μg/L | 2.2 ± 0.8 | 2.2 ± 0.9 | 2.1 ± 0.7 |
| Free 25(OH)D (Biklea), ng/L | 5.4 ± 2.0 | 5.5 ± 2.2 | 5.2 ± 1.7 |
| Free 25(OH)D (Vermeulena), ng/L | 5.4 ± 2.0 | 5.5 ± 2.3 | 5.3 ± 1.7 |
| PTH, pg/mL | 68 ± 32.6 | 68.1 ± 31.1 | 67.8 ± 34.4 |
| Calcium, mg/dL | 9.5 ± 0.4 | 9.5 ± 0.4 | 9.4 ± 0.4 |
| Calcium or vitamin D supplementation, N (%) | 22 (10%) | 21 (17.2%) | 1 (1%) |
| Creatinine, mg/dL | 0.8 ± 0.2 | 0.7 ± 0.1 | 0.9 0.2 |
| eGFRb, mL/min/1.73m2 | 81.34 ± 13.1 | 83.2 ± 12.8 | 79 ± 13.1 |
Abbreviations: 25(OH)D, 25-hydroxyvitamin D; BMI, body mass index; eGFR, estimated glomerular filtration rate; PTH, parathyroid hormone.
*Values are expressed as mean ± SD
aValues were derived from the Bikle equation using a spreadsheet supplied by the laboratory of Dr. Roger Bouillon (9).
beGFR was estimated using the CKD-EPI (Chronic Kidney Disease Epidemiology Collaboration) equation. (GFR = 141 * min(Scr/κ,1)α * max(Scr/κ, 1)-1.209 * 0.993Age * 1.018 [if female] * 1.159 [if black])
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