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

Table 1 Patient and lesion characteristics

	Original cohort				Propensity score-matched cohort
	HSP	EMR	P value	Standardized difference	HSP	EMR	P value	Standardized difference
No. of lesions	440	125			117	117
Age (yr), mean ± SD (range)	69.7 ± 9.47 (36–90)	69.8 ± 8.36 (46–89)	0.53	0.013	69.5 ± 8.34 (43–85)	70.1 ± 8.78 (46–89)	0.67	0.072
Sex, n (%)			0.83	0.022			1.00	0
Male	328 (74.6)	92 (73.6)			87 (74.4)	87 (74.4)
Female	112 (25.5)	33 (26.4)			30 (25.6)	30 (25.6)
Antithrombotic drugs use, n (%)			0.031	0.21			0.87	0.021
Yes	66 (15.0)	29 (23.2)			25 (21.4)	26 (22.2)
No	374 (85.0)	96 (76.8)			92 (78.6)	91 (77.8)
Size (mm), mean ± SD (range)	11.2 ± 1.76 (10–15)	12.7 ± 2.02 (10–15)	< 0.01	0.77	12.4 ± 2.08 (10–15)	12.5 ± 2.01 (10–15)	0.72	0.054
Location, n (%)			< 0.01	0.38			0.94	0.054
Right-sided colon	240 (54.6)	63 (50.4)			61 (52.1)	63 (53.9)
Left-sided colon	155 (35.2)	36 (28.8)			32 (27.4)	32 (27.4)
Rectum	45 (10.2)	26 (20.8)			24 (20.5)	22 (18.8)
Histological findings, n (%)			0.087	0.26			0.081	0.23
SSL	5 (1.1)	0 (0)			3 (2.6)	0 (0)
LGD/HGD	434 (98.6)	123 (98.4)			114 (97.4)	117 (100)
T1a/T1b	1 (0.2)	2 (1.6)			0 (0)	0 (0)
Macroscopic type, n (%)			0.011	0.3			0.79	0.034
Type 0–Is, 0–Isp	176 (40.0)	66 (52.8)			62 (53.0)	60 (51.3)
Type 0–IIa	264 (60.0)	59 (47.2)			55 (47.0)	57 (48.7)
Endoscopist, n (%)			0.053	0.2			0.51	0.086
Expert	186 (42.3)	65 (52.0)			63 (53.9)	58 (49.6)
Non-expert	254 (57.7)	60 (48.0)			54 (46.2)	59 (50.4)

HSP: Hot snare polypectomy; EMR: Endoscopic mucosal resection; right-sided colon: Caecum to transverse colon; left-sided colon: Descending colon to sigmoid colon; SSL: Sessile serrated lesion; LGD: Low-grade dysplasia; HGD: High-grade dysplasia; T1a: Shallow submucosal invasive cancer; T1b: Deep submucosal invasive cancer; SD: Standard deviation.