Table 4.
Comparison of different variables according to the vitamin D status of school children
| Variables | Range | Vitamin D deficiency (n=42) (%) | Vitamin D insufficiency (n=71) (%) | Vitamin D sufficiency (n=387) (%) |
|---|---|---|---|---|
| BMI (kg/m2) | 18.5-24.9 | 18 (42.8) | 27 (38) | 110 (28.4) |
| >25 | 1 (2.38) | 1 (1.4) | 6 (1.55) | |
| <18.5 | 23 (54.76) | 34 (476.88) | 280 (72.3) | |
| Sun exposure (%) | <20 | 36 (85.7) | 46 (64.78) | 92 (23.77) |
| >20 | 6 (14.28) | 16 (22.5) | 304 (78.55) | |
| Calcium intake (mg/day) | <1000 | 41 (97.6) | 60 (84.5) | 382 (98.7) |
| >1000 | 1 (2.38) | 2 (2.8) | 14 (3.61) | |
| Diet | Vegetarian | 27 (64.2) | 26 (36.6) | 72 (18.6) |
| Non-vegetarian | 15 (35.7) | 36 (50.7) | 324 (83.72) | |
| Calcium (mg/dl) | 8.1-10.4 | 17 (40.4) | 38 (53.5) | 343 (88.63) |
| <8.1 | 24 (57.1) | 22 (30.98) | 50 (12.9) | |
| >10.4 | 1 (2.38) | 2 (2.8) | 3 (0.77) | |
| Phosphorus (mg/dl) | <4 | 31 (73.8) | 42 (59.15) | 223 (57.62) |
| >4 | 11 (26.19) | 20 (28.16) | 173 (44.7) | |
| Alkaline phosphatase (IU/L) | <400 | 13 (30.9) | 30 (42.2) | 236 (60.98) |
| >400 | 29 (69) | 32 (45) | 160 (41.34) | |
| PTH (pg/ml) | 13-54 | 32 (76.19) | 56 (78.87) | 375 (96.89) |
| <13 | 5 (11.9) | 5 (7) | 13 (3.35) | |
| >54 | 5 (11.9) | 1 (1.4) | 8 (2.06) |
Data are presented as number and percentage of children in each group. BMI: Body mass index, 25(OH)D: 25-hydroxy vitamin D, PTH: Parathyroid hormone