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Table 3 Comparison of the diagnostic ability for submucosal invasion depth ≥ 1.8 mm between horizontal and vertical rigidities under the barium enema examination profile view

From: Role of barium enema examination for the diagnosis of submucosal invasion depth in T1 colorectal cancers

145 lesions Vertical rigidity (≥0.7 mm)
Horizontal rigidity (≥4.5 mm)   Positive Negative
Positive 87 1
Negative 21 36
χ2   16.41
P value 0.01