Table 4. Predictive performance of baseline adenoma attributes for predicting adenoma recurrence and invasive colorectal adenocarcinoma.

	Any recurrent adenoma, N=537/3,300	ROC-AUC (P value)
		Advanced adenoma, N=354/3,300	ICRCN=14/3,300
A. Covariates onlya	59.4% (<0.0001)	58.6% (<0.0001)	65.5% (0.03)
B. Covariates and attributesa	69.0% (<0.0001)	72.2% (<0.0001)	88.3% (<0.0001)
Net gainb	9.6% (<0.0001)	13.6% (<0.0001)	22.8% (<0.0001)

Abbreviations: ICRC, invasive colorectal cancer; ROC-AUC, receiver operating characteristic-area under the curve.

Any recurrent adenoma: any adenoma (including tubular, sessile, or flat) with or without risk attributes.

Attributes: Advanced adenoma: adenoma with ≥1 risk attributes. Risk attributes were defined at namely the number (≥3) and size (≥10 mm) of adenomas, and the presence of high-grade dysplasia or villous morphology.

Covariates include age, sex, smoking status, and family history of colorectal cancer.

^aContrasted with the null model (i.e., the non-discrimination line).

^bModel B contrasted with Model A.