TABLE 1.

Patient characteristics in the study.

Characteristics	Total (n = 88)	CEMR (n = 42)	UEMR (n = 46)	p
Age, median, (min—max)	58 (27–85)	61 (27–83)	59 (35–85)	0.384**
Sex, n (%)				0.157
Male	54 (61.4)	29 (69.0)	25 (54.3)
Female	34 (38.6)	13 (31.0)	21 (45.7)
Indication for colonoscopy, n (%)
Abdominal pain	24 (27.3)	13 (31.0)	11 (23.9)	0.459
Screening	23 (26.1)	8 (19.0)	15 (32.6)	0.148
Blood in stool	5 (5.7)	2 (4.8)	3 (6.5)	1*
Diarrhea	9 (10.2)	3 (7.1)	6 (13.0)	0.489*
Constipation	17 (19.3)	9 (21.4)	8 (17.4)	0.632
Postoperation CRC	9 (10.2)	7 (16.7)	2 (4.3)	0.080*
Stool change	1 (1.1)	0 (0.0)	1 (2.2)	1*
Clinical symptoms, n (%)
No symptom	33 (37.5)	15 (35.7)	18 (39.1)	0.741
Abdominal pain	22 (25.0)	11 (26.2)	11 (23.9)	0.805
Diarrhea	11 (12.5)	6 (14.3)	5 (10.9)	0.628
Blood in stool	5 (5.7)	1 (2.4)	4 (8.7)	0.363*
Constipation	17 (19.3)	9 (21.4)	8 (17.4)	0.632
Hypertension, n (%)	45 (51.1)	20 (47.6)	25 (54.3)	0.528
Diabetes, n (%)	8 (9.1)	5 (11.9)	3 (6.5)	0.471*
Kidney failure, n (%)	2 (2.3)	0 (0.0)	2 (4.3)	0.495*
Personal history of CRC, n (%)	3 (3.4)	2 (4.8)	1 (2.2)	0.604*
Family history of CRC, n (%)	2 (2.3)	1 (2.4)	1 (2.2)	1*

Abbreviations: CEMR, conventional endoscopic mucosal resection; CRC, colorectal cancer; UEMR, underwater endoscopic mucosal resection.

^*Fisher's exact test.

^**Mann–Whitney U test.