Table 1.

Baseline characteristics of 141 patients from Olmsted County, Minnesota, 1970–2004, who had undergone at least one bowel resection during their clinical course.

Factors at Crohn’s diagnosis	N (%)
Gender
Male	78 (55.3)
Female	63 (44.7)
Age
Less than 16 years (A1)	12 (8.5)
Age between 17 and 40 years (A2)	91 (64.5)
Age more than 40 years (A3)	38 (27.0)
Disease Location
Small Bowel (L1)	55 (39.0)
Colitis (L2)	22 (15.6)
Ileocolonic (L3)	60 (42.6)
Gastroduodenal (L4)	4 (2.8)
Disease behavior
Non-Stricturing/Non-Penetrating (B1)	87 (63.5)
Stricturing (B2)	11 (8.0)
Penetrating (B3)	39 (28.5)
Perianal Disease prior to or within 90 days of diagnosis
Yes	25 (17.7)
Smoking history
Current smokers	57 (41.9)
Non-smokers	65 (47.8)
Family History of IBD
Yes	24 (17.6)
Extra-intestinal manifestation
Yes	15 (11.0)