Descriptive data of studied cases (n=50) according to 25(OH)D status
| Vitamin D deficiency (n=22) | Vitamin D insufficiency (n=20) | Vitamin D sufficiency (n=8) | F | P | |
| Sun exposure (hours/week) | 2.3±0.45 (1.5–4.0) | 3.0±0.5 (2–4.5) | 3.5±0.8 (2.5–5.5) | 0.21 | 0.87 |
| Height SDS | −5.22±0.21 (−3.55 to −6.87) | −4.18±0.51 (−2.89 to −5.98) | −3.03±0.33 (−2.24 to −4.12) | 6.59 | 0.02* |
| BMI SDS | +1.23±0.11 (−0.91 to +1.72) | +0.80±0.21 (−0.11 to +1.01) | −0.99±0.34 (−0.86 to +1.20) | 9.11 | <0.001*** |
| BA SDS | −5.02±0.55 (−3.45 to −6.89) | −4.26±−0.22 (−3.10 to −6.05) | −3.27±0.13 (−2.51 to −5.99) | 7.23 | 0.01* |
| Total serum Ca (mg/dL) | 7.9±0.6 (6.9–9.9) | 8.3±0.4 (7.1–9.3) | 9.2±0.5 (8.2–9.9) | 6.39 | 0.02* |
| Total serum P (mg/dL) | 5.2±0.8 (3.7–4.2) | 4.9±0.7 (3.9–6.2) | 5.3±0.8 (3.9–6.1) | 1.98 | 0.60 |
| ALP (IU/L) | 210±100.5 (168–480) | 199±112.2 (120–353) | 193±117.3 (119–370) | 2.21 | 0.08 |
| PTH (pg/mL) | 67.7±12.4 (34.9–85.4) | 43.3±10.2 (25.9–75.2) | 25.9±15.2 (18.5–60.2) | 10.23 | <0.01** |
| Peak GH by clonidine (ng/mL) | 2.1±0.2 (0.9–5) | 3.0±0.1 (1.0–5.4) | 4.2±0.2 (1.2–6.6) | 6.98 | 0.01* |
| Peak GH by insulin (ng/mL) | 1.3±0.9 (0.6–3.2) | 3.4±0.6 (2.1–5.9) | 4.8±0.2 (2.9–6.6) | 8.25 | 0.01* |
Results are expressed as mean±SD and range.
*P<0.05, **P<0.01, ***P<0.001.
25(OH)D, 25 hydroxyvitamin D; ALP, alkaline phosphatase; BA, bone age; BMI, body mass index; Ca, calcium; GH, growth hormone; P, phosphorous; PTH, parathyroid hormone; SDS, SD score.