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Table 8 Multiple comparisons between mean ADC value of different tumor grades

From: Accuracy of diffusion-weighted magnetic resonance imaging in evaluation of muscle invasion and histologic grading of the urinary bladder carcinoma

(I) Tumor grading

(J) Tumor grading

Mean difference (I-J)

Std. error

P value

95% confidence interval

Lower bound

Upper bound

Grade 1

Grade 2

0.000428*

0.000072

< 0.001*

0.000253

0.000602

Grade 3

0.000724*

0.000063

< 0.001*

0.000572

0.000876

Grade 2

Grade 3

0.000296*

0.000059

< 0.001*

0.000152

0.000441

Grade 3

Grade 2

− 0.000296*

0.000059

< 0.001*

− 0.000441

− 0.000152

  1. *The mean difference is significant at P value < 0.001
  2. Data presented as mean and standard error