Effects of early diet resumption on the incidence of complications following polypectomy: A randomized controlled trial

Table 3 Subgroup analysis of patients with single polyp or multiple polyps in experimental group and control group, n (%)

Characteristic	Single polyp (n = 491)			Multiple polyps (n = 1011)
	Experimental group (n = 244)	Control group (n = 247)	P value	Experimental group (n = 507)	Control group (n = 504)	P value
Age (years) (mean ± SD)	54.3 ± 12.0	52.9 ± 11.9	0.193	59.2 ± 9.7	59.2 ± 10.4	0.979
Sex			0.498			0.134
Male	117 (48.0)	126 (51.0)		338 (66.7)	358 (71.0)
Female	127 (52.0)	121 (49.0)		169 (33.3)	146 (29.0)
Duration of polypectomy (minute) [median (P25, P75)]	15 (12, 21)	17 (13, 21)	0.018a	25 (18, 33)	25 (19, 33)	0.479
Polyp size (cm) [median (P25, P75)]	0.8 (0.7, 1.0)	0.8 (0.8, 1.0)	0.392	1.0 (0.8, 1.1)	1.0 (0.8, 1.2)	0.457
Polypectomy modality			0.121			0.456
Cold forceps polypectomy and cold snare polypectomy	24 (9.8)	13 (5.3)		62 (12.2)	74 (14.7)
Hot snare polypectomy and endoscopic mucosal resection	215 (88.1)	226 (91.5)		435 (85.8)	418 (82.9)
Hybrid endoscopic submucosal dissection	5 (2.0)	8 (3.2)		10 (2.0)	12 (2.4)
DPPB	6 (2.5)	7 (2.8)	0.796	29 (5.7)	34 (6.7)	0.500
Major bleeding	2 (0.8)	3 (1.2)	1.000	9 (1.8)	13 (2.6)	0.381
The timing of DPPB (day) [median (P25, P75)]	2.5 (1.0, 4.8)	3.0 (1.0,4.0)	0.942	2.0 (1.0, 3.0)	2.0 (1.0, 3.0)	0.198
The timing of major bleeding (day) [median (P25, P75)]	4.0 (1.0, 7.0)	3.0 (2.0, 4.0)	1.000	2.0 (1.5, 3.0)	2 (1.5, 3.5)	0.889
Post-polypectomy perforation	0 (0.0)	0 (0.0)	-	0 (0.0)	2 (0.4)	0.476
Post-polypectomy hypoglycemia	0 (0)	3 (1.2)	0.251	3 (0.6)	8 (1.6)	0.127
Post-polypectomy fever	5 (2)	10 (4)	0.198	11 (2.2)	12 (2.4)	0.822
post-polypectomy length of stay (day) [median (P25, P75)]	1 (1, 1)	1 (1, 2)	< 0.001b	1 (1, 2)	2 (1, 2)	< 0.001b

^aP < 0.05.

^bP < 0.01.

DPPB: Delayed post-polypectomy bleeding.