Hot snare polypectomy vs endoscopic mucosal resection using bipolar snare for intermediate size colorectal lesions: Propensity score matching

Table 2 Comparison of outcomes between the hot snare polypectomy and endoscopic mucosal resection groups

	Original cohort			Propensity score-matched cohort
	HSP	EMR	P value	HSP	EMR	P value
No. of lesions	440	125		117	117
En bloc resection, n, % (95%CI)	417, 94.8 (92.3-96.7)	116, 92.8 (86.8-96.7)	0.4	109, 93.2 (87.0-97.0)	108, 92.3 (85.9-96.4)	0.81
Piecemeal resection, n, % (95%CI)	23, 5.2 (3.3-7.7)	9, 7.2 (3.3-13.2)		8, 6.8 (3.0-13.0)	9, 7.7 (3.6-14.1)
R0 resection, n, % (95%CI)	359, 81.6 (77.6-85.1)	101, 80.8 (72.8-87.3)	0.84	91, 77.8 (69.2-84.9)	94, 80.3 (72.0-87.1)	0.64
RX/R1 resection, n, % (95%CI)	81, 18.4 (14.9-22.4)	24, 19.2 (12.7-27.2)		26, 22.2 (15.1-30.8)	23, 19.7 (12.9-28.0)
Delayed bleeding, n, % (95%CI)	5, 1.1 (0.4-2.6)	2, 1.6 (0.2-5.7)	0.68	2, 1.7 (0.2-6.0)	2, 1.7 (0.2-6.0)	1.00
Perforation, n, % (95%CI)	0, 0 (0-0.8)	1, 0.8 (0.0-4.4)	0.06	0, 0 (0-3.1)	1, 0.9 (0-4.7)	N/A

HSP: Hot snare polypectomy; EMR: Endoscopic mucosal resection; R0: Negative margin both horizontally and vertically; RX: Unclear resection margin either horizontally or vertically; R1: Positive resection margin either horizontally or vertically; CI: Confidence interval; N/A: Not applicable.