Endoscopic mucosal resection of colorectal adenomas > 20 mm: Risk factors for recurrence

Table 3 Risk factors for recurrence (univariate analysis)¹

Variable	Recurrence (fraction/%)	OR (95%CI)	P value2
Age
< 65 yr	10/96 (11.4%)	2.492	0.011
> 65 yr	23/120 (19.2%)	(1.182-5.252)
Size
< 30 mm	19/153 (12.4%)	2.472	0.005
> 30 mm	14/63 (22.2%)	(1.233-4.957)
Morphology
Paris 0-Ip (pedunculated)	0/31 (0%)	26.386	0.018
Paris 0-Is, 0-II a, b, c (sessile/flat)	33/185 (17.8%)	(0.473-1472.565)
Localization
Right-sided colon	31/149 (20.8%)	7.475	0.002
Left-sided colon or rectum	2/67 (3.0%)	(1.787-31.264)
Resection technique
Piecemeal (fragmented)	30/170 (17.6%)	3.741	0.01
En bloc	3/46 (6.5%)	(1.139-12.292)
Histology
Tubular-villous adenoma	25/103 (24.3%)	3.417	0.002
Tubular, serrated, carcinoma	8/113 (7.1%)	(1.533-7.614)

¹The overall recurrence rate was 33/216 (15.3%);

²As calculated with the Kaplan-Meier method.