Prior abdominal surgery as a potential risk factor for colonic diverticulosis or diverticulitis

Table 2 Clinical indication for colonoscopy and endoscopic findings

Features	Without diverticulitis, n = 268	With diverticulitis, n = 91	P value
Indication of colonoscopy			0.55
Screening	49 (18)	10 (11)
Abdominal pain	22 (8)	10 (11)
Anemia	40 (15)	18 (19)
Rectal bleeding	24 (9)	9 (10)
Positive FOBT	17 (6)	9 (10)
Diarrhea	20 (7.5)	5 (5)
Constipation	10 (3)	5 (5)
History of polyps	61 (22)	16 (17)
Other	24 (9)	9 (10)
Polyps			0.10
None	177 (66)	52 (58)
Hyperplastic	12 (4)	1 (1)
Adenoma	69 (26)	33 (37)
Malignant	6 (2)	1 (1)
Hyperplastic + adenoma	2 (0)	2 (2)

Data are n (%). FOBT: Fecal occult blood test.