Comparison of Diagnostic Accuracies of Various Endoscopic Examination Techniques for Evaluating the Invasion Depth of Colorectal Tumors

Table 3

Comparison of the frequencies of lesions with endoscopic images those were difficult to diagnosis among 3 different endoscopic techniques (conventional endoscopy, magnifying endoscopy, and EUS).

	Inadequate imaging		Frequency of inadequate
	Yes	No	imaging lesions
Conventional	5	163	3.0%^A
endoscopy
Magnifying	8	160	4.8%^B
endoscopy
EUS	26	142	15.5%^C

𝑃=0.3961 (A versus B), 𝑃=0.0011 (B versus C), 𝑃<0.0001 (A versus C).