Performance of the Montreal classification for inflammatory bowel diseases

Table 4 Percentages of correct answers compared to the “expert evaluation” overall and divided for different years of experience with inflammatory bowel disease patients

	Overall correct answers	< 10 yr of experience	10-20 yr of experience	> 20 yr of experience
Age of onset	92.3%	95.2%	93.0%	88.6%
Diagnosis	96.2%	97.0%	93.3%	98.3%
CD disease localization	90.6%	94.2%	90.0%	87.5%
CD upper gastrointestinal	94.8%	91.8%	100.0%	92.5%
CD perianal disease	98.9%	98.5%	98.3%	100.0%
CD disease behavior	93.0%	92.3%	96.7%	90.0%
CD severity (mild, moderate, severe)	69.9%	73.1%	70.0%	66.7%
UC disease extent	86.6%	86.2%	85.3%	88.3%
UC disease severity colitis	48.0%	56.2%	37.7%	50.0%
EIM	83.4%	82.7%	81.6%	86.0%

EIM: Extra-intestinal manifestations; CD: Crohn’s disease; UC: Ulcerative colitis.