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. 2007 Jan 25;56(7):968–973. doi: 10.1136/gut.2006.111302

Table 3 Rating learning effect. Intraclass correlation coefficients (ICC) for raters 1 and 2 for three time points during the study.

Time of study Patients (n) ICC
Rater 1 Rater 2
Month 1 57 0.97 0.97
Month 2 63 0.99 0.99
Months 3–4 80 0.99 0.99