Table 2.
BTMs at baseline according to vitamin D level (i.e., <30, 30–39.8, 40–49.8, ≥50 nmol/L).
| BTMs | 25(OH)D < 30 (n = 4) |
25(OH)D 30–39.8 (n = 31) |
25(OH)D 40–49.8 (n = 22) |
25(OH)D ≥ 50 (n = 111) |
p-Value |
|---|---|---|---|---|---|
| 25(OH)D (nmol/L) | 9.9 (9.1–10.6) | 13.4 (12.3–14.5) | 18.3 (17.4–19.1) | 24.8 (21.7–26.6) | <0.001 |
| bALP (µg/L) | 18.9 (15.1–21.4) | 16.7 (12.6–22.5) | 18.1 (14.7–22.7) | 16.1 (13.8–19.7) | 0.732 |
| CTX (ng/mL) | 0.13 (0.12–0.21) | 0.13 (0.06–0.25) | 0.17 (0.14–0.34) | 0.19 (0.12–0.30) | 0.126 |
| OC (ng/mL) | 10.8 (9.4–12.2) | 11.5 (9.3–14.7) | 14.6 (11.0–19.7) | 12.9 (10.7–18.0) | 0.218 |
| P1NP (ng/mL) | 31.5 (22.7–41.8) | 36.2 (28.7–43.6) | 43.6 (36.7–55.0) | 41.2 (31.9–52.1) | 0.103 |
| PTH (pg/mL) | 48.5 (26.7–88.0) | 55.6 (41.7–68.9) | 52.6 (37.9–64.3) | 48.5 (41.0–61.9) | 0.453 |
Data are shown as median and interquartile ranges; BTM = bone turnover marker; 25(OH)D = 25-hydroxyvitamin D; bALP = bone-specific alkaline phosphatase; CTX = β-CrossLaps; OC = osteocalcion; P1NP = procollagen type 1 amino-terminal propeptide; PTH = parathyroid hormone.