Increase in colonic diverticular hemorrhage and confounding factors

Table 2 Comparison between early group and late group among patients undergoing colonoscopy for overt lower gastrointestinal bleeding from 1995-2013 n (%)

Age, sex and cause/site of bleeding	All patients (1995-2013)n = 1803	EG (1995-2006)n = 828	LG (2007-2013)n = 975	P-value	Adjusted P-value
Old age (≥ 70 yr)	582 (32.3)	196 (23.7)	386 (39.6)	< 0.01	< 0.01
Male	913 (50.6)	419 (56.0)	495 (50.8)	0.94	0.94
External/internal hemorrhoids	432 (24.0)	212 (25.6)	220 (22.6)	0.13	0.46
Ischemic colitis	316 (17.5)	143 (17.3)	173 (17.7)	0.79	0.1
Colonic DH	273 (15.1)	49 (5.9)	224 (23.0)	< 0.01	< 0.01
Advanced colonic cancer	153 (8.5)	80 (9.7)	73 (7.5)	0.1	0.06
Early colon cancer/colon adenomas/polyps	111 (6.2)	53 (6.4)	58 (5.9)	0.69	0.73
Infectious enteritis	68 (3.8)	37 (4.5)	31 (3.2)	0.15	0.4
Angiodysplasia	27 (1.5)	15 (1.8)	12 (1.2)	0.31	0.26
Drug-related enteritis	23 (1.3)	13 (1.6)	10 (1.0)	0.3	0.32
Others	248 (13.8)	137 (16.5)	111 (11.4)	-	-
No abnormal findings	152 (8.4)	89 (10.7)	63 (6.5)	-	-
Total	1803 (100)	828 (100)	975 (100)	-	-

Adjusted P-value age- and sex-adjusted P-value; No abnormal findings no site identified as origin of bleeding; Each set of values represents number (%). χ² test. EG: Early group: 1995-2006; LG: Late group: 2007-2013; DH: Diverticular hemorrhage.