Development and validation of a risk score for advanced colorectal adenoma recurrence after endoscopic resection

Table 3 Results of multivariate stepwise backward regression analysis of prognostic factors for 3-year recurrence

Variable	Odds ratio (95%CI)	Regression coefficient	Score points1	P-value
Grade of dysplasia
Low-grade	1		-
High-grade	4.25 (2.11-7.5)	1.93	4	< 0.001
Size
≤ 15 mm	1		-
> 15 mm	3.96 (1.87-7.55)	1.61	3	< 0.001
Number of ACAs
1	1		-
> 1	3.22 (2.19-5.39)	1.21	2	< 0.001

¹The regression coefficients were multiplied by 2 and rounded in order to facilitate the calculation of the score. ACA: Advanced colorectal adenoma.