Evolution of disease phenotype in adult and pediatric onset Crohn’s disease in a population-based cohort

Table 1 Clinical characteristics of patients with Crohn’s disease

	CD (n = 506)
Male/female	251/255
Age at presentation (yr)1	28.5 (22-38)
Follow-up (yr)1	13.5 (6-19.5)
Familial IBD	12.90%
Location at diagnosis
L1	32.80%
L2	35.90%
L3	30.60%
L4 only	0.70%
L4	4.80%
Behavior at diagnosis
B1	56.90%
B2	19.80%
B3	23.30%
Frequent relapse	13.10%
Perianal disease	25.50%
Arthritis	26.70%
PSC	1.80%
Ocular	4.70%
Cutaneous	9.30%
Steroid use	68.60%
Azathioprine use	45.80%
Biological use	10.70%
Resection/re-operation	41.3%/28.2%

¹Median (interquartile range). L1: Ileal; L2: Colon; L3: Ileocolon; L4: Upper gastrointestinal; B1: Inflammatory; B2: Stenosing; B3: Penetrating; PSC: Primary sclerosing cholangitis.