Table 2.

Rates of Agreement in the Data Quality Exercise

Characteristic	Agreement at Patient Level (range)	Agreement Overall
Year of Diagnosis	70%–100%	96%
IBD subtypeb	78%- 100%	97%
Ulcerative colitis macroscopic extent of disease	56%–100%	91%a
Crohn’s disease behavior	70%–100%	83%
Crohn’s disease of colon	70%–100%	92%
Crohn’s disease of ileum	78%–100%	96%
Crohn’s disease perianal fistula	89%–100%	96%

^aProctitis or left-sided colitis vs extensive colitis or pancolitis

^bThe 3 reviews with disagreement were all categorized as IBD-U, whereas the majority are categorized as UC.