Efficacy-cost analysis of endoscopic mucosal resection and cold snare polypectomy: A propensity score matching analysis

Table 2 Baseline data of two groups of patients after propensity score matching, n (%)

Items	EMR group (n = 40)	CSP group (n = 40)	χ2/t	P value
Age,			1.818	0.178
≥ 60 years	25 (62.50)	19 (47.50)
< 60 years	15 (37.50)	21 (52.50)
Sex,			0.051	0.822
Male	22 (55.00)	23 (57.50)
Female	18 (45.00)	17 (42.50)
BMI (kg/m2)	22.55 ± 1.45	21.97 ± 2.68	1.209	0.230
Smoking			0.000	1.000
Yes	21 (52.50)	21 (52.50)
No	19 (47.50)	19 (47.50)
Diabetes mellitus			0.202	0.653
Yes	19 (47.50)	17 (42.50)
No	21 (52.50)	23 (57.50)
Combined hypertension			0.000	1.000
Yes	19 (47.50)	19 (47.50)
No	21 (52.50)	21 (52.50)
Polyp diameter			0.052	0.820
≥ 10 mm	16 (40.00)	17 (42.50)
< 10 mm	24 (60.00)	23 (57.50)
Number of polyps			0.000	1.000
≥ 3	21 (52.50)	21 (52.50)
< 3	19 (47.50)	19 (47.50)
Polyp location			0.220	0.639
Colon	25 (62.50)	13 (32.50)
Rectum	15 (37.50)	27 (67.50)
Pathological type			2.489	0.115
Inflammatory hyperplasia	26 (65.00)	19 (47.50)
Adenomatous	14 (35.00)	21 (52.50)

EMR: Endoscopic mucosal resection; CSP: Cold snare polypectomy; BMI: Body mass index.