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Table 3 Correlations of serum trace elements levels with BMI and serum leptin in the obese children

From: Serum trace elements in obese Egyptian children: a case–control study

  Body mass index Serum leptin
  r p r p
BMI (kg/m 2 ) - - 0.539 <0.01
Serum leptin (ng/mL) 0.539 <0.01 - -
Serum zinc (ug/dl) −0.646 <0.01 −0.746 <0.01
Serum copper (ug/dl) 0.112 >0.05 −0.245 >0.05
Serum selenium (ug/l) −0.108 >0.05 −0.078 >0.05
Serum iron (ug/dl) −0.479 <0.05 −0.245 >0.05
Serum chromium (ng/ml) −0.063 >0.05 −0.078 >0.05
  1. BMI, body mass index. Values are Correlation coefficient r (Pearson’s Correlation analysis). P value < 0.05 indicates a significant difference.