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Table 3 Comparison between the thalassemic and control groups regarding Ca, Ph, vitamin D, and alkaline phosphatase

From: Assessment of serum vitamin D levels in Egyptian children with beta-thalassemia major

Variable Thalassemic group (no. = 55)   Mann-Whitney test P
Mean ± SD Range Mean ± SD Range
Calcium (mg/dl) 5.61 ± 0.87 6.5–8.6 9.71 ± 0.34 8.9–10.2 1.25 < 0.001 (HS)
Phosphorus (mg/dl) 5.28 ± 1.06 3.1–7.6 3.25 ± 0.71 3–5.5 t = 0.17 < 0.001 (HS)
Alkaline phosphatase (U/l) 299.13 ± 83.15 168–582 169.43 ± 35.68 85–310 6.93 < 0.001 (HS)
Vit. D (ng/ml) 19.84 ± 5.79 9.5–31.35 44.98 ± 5.77 36–57 7.59 < 0.001 (HS)
  No. % No. %   
 Normal vit. D 28 50.90 30 100.00 FET < 0.001 (HS)
 Insufficient vit. D 22 40.00
 Deficient vit. D 5 9.09