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Table 3 Comparison between different groups of thalassemic patients and controls as regards signal intensity ratio of the liver and the pancreas.

From: Gradient-echo magnetic resonance imaging study of pancreatic iron overload in young Egyptian beta-thalassemia major patients and effect of splenectomy

SIR of Liver N Median IQR Χ2 value# P value
I) Controls 20 15.389 14.158-18.074 42.828 <.001*
II) Non diabetic(NGT) 20 .833 .646-.861   
III) abnormal glucose tolerance 20 .489 .159-.769   
I/II) z value** = -5.423 P value < .001* I/III) z value** = -5.422 P value < .001* II/III) z value** = -2.379 P value = .017*
SIR of pancreas N Median IQR Χ 2 value # P value
I) Controls 20 18.036 16.165-20.183 38.384 <.001*
II) Non diabetic(NGT) 20 2.548 1.968-8.111   
III) abnormal glucose tolerance 20 1.185 .833-1.519   
I/II) z value** = -5.425 P value < .001* I/III) z value** = -5.423 P value < .001* II/III) z value** = -2.762 P value = .006*
  1. #Kruskal Wallis test; **Mann Whitney test;*Significant; IQR, interquartile range (25-75th percentile range).