Table 7 Correlation of GLUT1 and OCT3/4 expression with tumor grade

Grade

 Spearman correlation

1

0.4461

0.6505

 Sig. (2-tailed)

–

0.001

< 0.001

 N

50

50

50

GLUT1

 Spearman correlation

0.4461

1

0.4632

 Sig. (2-tailed)

0.001

–

< 0.001

 N

50

50

50

Co-expression*

 Spearman correlation

0.6505

0.4632

1

 Sig. (2-tailed)

< 0.001

< 0.001

–

 N

50

50

50

OCT3/4

 Spearman correlation

0.6499

0.618

0.6974

 Sig. (2-tailed)

< 0.001

< 0.001

< 0.001

 N

50

50

50