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Table 4 Correlation between 25-OH-vitamin D, calcium, and phosphorus and studied variables among the thalassemic group

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

Variable (no. = 55) 25-OH-vitamin D (ng/ml) Ca (mg/dl) Ph (mg/dl)
Rho P Rho P Rho P
25-OH-vitamin D (ng/ml) 1.00      
Ca (mg/dl) − 0.19 0.16 1.00    
Ph (mg/dl) − 0.21 0.11 0.24 0.08 1.00  
Age (years) 0.07 0.60 − 0.20 0.14 0.05 0.73
Weight (kg) 0.11 0.41 − 0.19 0.17 0.01 0.92
Height (cm) 0.09 0.50 − 0.18 0.18 − 0.01 0.91
BMI (kg/m2) 0.05 0.73 − 0.01 0.92 0.002 0.99
Liver span (cm) 0.16 0.24 − 0.17 0.22 0.06 0.63
Spleen length (cm) − 0.01 0.95 − 0.12 0.41 − 0.06 0.69
Age of start (months) 0.05 0.69 − 0.12 0.37 − 0.05 0.71
Rate/week 0.05 0.70 0.01 0.94 0.03 0.83
ALT (U/l) 0.17 0.21 0.09 0.52 − 0.04 0.78
AST (U/l) 0.11 0.42 − 0.05 0.74 − 0.12 0.36
HB (g/dl) 0.26 0.05 0.03 0.84 − 0.06 0.63
MCV (fl) 0.03 0.83 0.01 0.94 − 0.20 0.14
MCH (Pg) − 0.04 0.75 − 0.03 0.85 − 0.06 0.65
MCHC (g/dl) − 0.005 0.97 − 0.10 0.46 0.13 0.36
WBCs (103/μl) − 0.11 0.42 0.18 0.18 − 0.20 0.15
Platelets (103/μl) − 0.02 0.87 − 0.03 0.84 0.15 0.27
Ferritin (ng/ml) 0.06 0.65 − 0.008 0.95 − 0.05 0.71
Alkaline phosphatase − 0.004 0.97 0.25 0.07 0.13 0.33
  1. ALT alanine transaminase, AST aspartate transaminase, HB hemoglobin, MCV mean corpuscular volume, MCH mean corpuscular hemoglobin, MCHC mean corpuscular hemoglobin concentration, WBCs white blood cells count