Comparison of Endoscopic Radiofrequency Ablation and Argon Plasma Coagulation in Patients with Gastric Low-Grade Intraepithelial Neoplasia: A Large-Scale Retrospective Study

Table 2

Submucosal injection for postoperative abdominal pain relief.

	Submucosal injection group	Non-submucosal injection group	value
Abdominal pain relief ratio in the RFA group	22/32 (68.8)	9/41 (22.0)	<0.001
Abdominal pain relief ratio in the APC group	13/20 (65.0)	6/30 (20.0)	0.001
Total	35/52 (67.3)	15/71 (21.1)	<0.001