Rectosigmoid findings are not associated with proximal colon cancer: Analysis of 6196 consecutive cases undergoing total colonoscopy

Table 4 Risk of proximal advanced adenoma and cancer according to gender, age, and rectosigmoid findings (multivariate analysis).

Variables	No. of pts	Advanced adenoma
		Advanced adenoma			Cancer
		Odds ratio	(95%CI)	P	Odds ratio	(95%CI)	P
Gender
Female	2197	1	(Referent)		1	(Referent)
Male	3999	2.1	(1.7-2.6)	<0.0001	0.9	(0.6-1.3)	0.5287
Age (yr)
-49	1166	1	(Referent)		1	(Referent)
50-59	1618	2.5	(1.7-3.6)	<0.0001	10.0	(2.4-42.4)	0.0018
60-69	1860	3.1	(2.12-4.5)	<0.0001	13.8	(3.3-57.2)	0.0003
70-	1552	3.5	(2.4-5.1)	<0.0001	35.6	(8.7-145.2)	<0.0001
Findings of rectosigmoid colon
No neoplasm	4245	1	(Referent)		1	(Referent)
Diminutive adenoma	598	0.9	(0.6-1.3)	0.4995	0.7	(0.3-1.2)	0.1881
Small adenoma	500	1.6	(1.2-2.2)	0.0019	1.0	(0.6-1.8)	0.9731
Advanced adenoma	673	2.5	(2.0-3.2)	<0.0001	0.8	(0.5-1.4)	0.4577
Cancer	180	2.6	(1.7-3.8)	<0.0001	0.2	(0.0-1.2)	0.0726