Effects of endoscopic mucosal resection and argon plasma coagulation on postoperative recovery and complications in elderly colon polyp patients

Table 1 Comparison of general data between the two groups, mean ± SD/n (%)

Variables	Total (n = 224)	EMR (n = 124)	APC (n = 100)	Statistic	P value
Age (years)	55.51 ± 2.96	55.35 ± 2.94	55.72 ± 2.97	t = -0.94	0.349
Gender				χ2 = 0.52	0.471
Female	86 (38.39)	45 (36.29)	41 (41.00)
Male	138 (61.61)	79 (63.71)	59 (59.00)
Polyp diameter (cm)	1.23 ± 0.18	1.22 ± 0.19	1.25 ± 0.17	t = -1.24	0.216
Polyp number				χ2 = 0.32	0.573
Single polyp	39 (17.41)	20 (16.13)	19 (19.00)
Multiple polyps	185 (82.59)	104 (83.87)	81 (81.00)
Polyp type				χ2 = 0.23	0.892
Mucosal elevation	167 (74.55)	94 (75.81)	73 (73.00)
Sessile polyp	38 (16.96)	20 (16.13)	18 (18.00)
Pedunculated polyp	19 (8.48)	10 (8.06)	9 (9.00)

EMR: Endoscopic mucosal resection; APC: Argon plasma coagulation.