Table 2.

Gastrointestinal complications and malignancies in patients with inflammatory bowel disease

Specific complication	Overall	Crohn's disease	Ulcerative colitis	P value	Missing data
Gastrointestinal complications	248 (61.4)	199 (82.6)	49 (30.1)	<0001	35
Fistula	150 (37.5)	141 (59)	9 (5.6)	<0001	35
Strictures	103 (25.7)	97 (40.6)	6 (3.7)	<0001	34
Abscess	89 (22.3)	78 (32.6)	11 (6.8)	<0001	35
Intestinal obstruction	58 (14.5)	49 (20.5)	9 (5.6)	<0001	34
Perforation	20 (5)	17 (7.1)	3 (1.9)	.0190	35
Polyps	18 (4.5)	9 (3.8)	9 (5.6)	.4008	35
Adhesions	17 (4.2)	15 (6.3)	2 (1.2)	.0202	34
Anal fissure	16 (4)	13 (5.4)	3 (1.9)	.1160	34
Toxic megacolon	2 (0.5)	0	2 (1.2)	.1626	34
Cyst	1 (0.3)	0	1 (0.6)	.4040	34
Colon involvement in Crohn's disease	152 (34.9)	152 (64.4)	NA	NA	13
Gastrointestinal malignancy
Gastric cancer	4 (1.0)	1 (0.4)	3 (1.9)	.3076	34
Colorectal cancer	14 (3.2)	9 (3.6)	5 (2.7)	.5881	22

Data are n (%).