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

Table 4 Subgroup analysis of patients with polyps’ size < 1 cm or polyps’ size ≥ 1 cm in experimental group and control group, n (%)

Characteristic	Polyp size < 1 cm (n = 784)			Polyp size ≥ 1 cm (n = 718)
	Experimental group (n = 395)	Control group (n = 389)	P value	Experimental group (n = 356)	Control group (n = 362)	P value
Age (years) (mean ± SD)	57.2 ± 10.6	56.2 ± 11.5	0.224	58.2 ± 10.8	58.2 ± 11.0	0.997
Sex			0.245			0.307
Male	239 (60.5)	251 (64.5)		216 (60.7)	233 (64.4)
Female	156 (39.5)	138 (35.5)		140 (39.3)	129 (35.6)
Duration of polypectomy (minute) [median (P25, P75)]	19 (14, 27)	19 (15, 28)	0.335	24 (17, 33)	25 (18, 33)	0.278
Polyp number [median (P25, P75)]	2 (1, 3)	2 (1, 3)	0.798	3 (1, 4)	3 (1, 4)	0.664
Polypectomy modality			0.824			0.829
Cold forceps polypectomy and cold snare polypectomy	68 (17.2)	68 (17.5)		18 (5.1)	19 (5.2)
Hot snare polypectomy and endoscopic mucosal resection	322 (81.5)	314 (80.7)		328 (92.1)	330 (91.2)
Hybrid endoscopic submucosal dissection	5 (1.3)	7 (1.8)		10 (2.8)	13 (3.6)
DPPB	12 (3)	12 (3.1)	0.970	23 (6.5)	29 (8.0)	0.423
Major bleeding	2 (0.5)	4 (1.0)	0.668	9 (2.5)	12 (3.3)	0.532
The timing of DPPB (day) [median (P25, P75)]	2.0 (1.3, 3.8)	2.5 (1.0, 4.0)	1.000	2.0 (1.0, 3.0)	2.0 (1.0, 2.5)	0.205
The timing of major bleeding (day) [median (P25, P75)]	1.0 (1.0, 1.0)	3.5 (1.5, 4.0)	0.134	3.0 (2.0, 3.5)	2.0 (2.0, 2.8)	0.273
Post-polypectomy perforation	0 (0.0)	2 (0.5)	0.246	0 (0.0)	0 (0.0)	-
Post-polypectomy hypoglycemia	1 (0.3)	7 (1.8)	0.072	2 (0.6)	4 (1.1)	0.697
Post-polypectomy fever	7 (1.8)	10 (2.6)	0.443	9 (2.5)	12 (3.3)	0.532
Post-polypectomy length of stay (day) [median (P25, P75)]	1.0 (1.0, 2.0)	1.0 (1.0, 2.0)	< 0.001b	1.0 (1.0, 2.0)	2.0 (1.0, 2.0)	< 0.001b

^aP < 0.05.

^bP < 0.01.

DPPB: Delayed post-polypectomy bleeding.