Comparison of a portable disposable large-channel gastroscope and a conventional reusable gastroscope in gastric endoscopic submucosal dissection

Table 2 Comparison of the operational performance scores between the portable disposable large-channel gastroscope (experimental group) and conventional reusable gastroscopes (control group)

Operational performance	Score	Experimental group	Control group	P value
Image acquisition	0	0	0
	1	0	0
	2	0	0
	3	0	0
	4	20	20
Water supply	0	0	0	0.602
	1	0	0
	2	0	0
	3	3	1
	4	17	19
Air supply	0	0	0	0.602
	1	0	0
	2	0	0
	3	2	0
	4	18	20
Suction	0	0	0	0.289
	1	0	0
	2	0	0
	3	0	4
	4	20	16
Large-knob operation	0	0	0	0.602
	1	0	0
	2	0	0
	3	2	0
	4	18	20
Small-knob operation	0	0	0	0.108
	1	0	0
	2	1	0
	3	5	0
	4	14	20
Body rigidity	0	0	0	0.183
	1	0	0
	2	0	0
	3	5	0
	4	15	20
Field of view	0	0	0
	1	0	0
	2	0	0
	3	0	0
	4	20	20
Light illumination	0	0	0	0.183
	1	0	0
	2	0	0
	3	0	5
	4	20	15
Tip flexibility	0	0	0
	1	0	0
	2	0	0
	3	0	0
	4	20	20
Working channel	0	0	0
	1	0	0
	2	0	0
	3	0	0
	4	20	20