Prevalence of colorectal neoplasms in young, average risk individuals: A turning tide between East and West

Table 2 Comparison of detection rates of neoplastic findings on primary screening between subjects aged 40-49 and subjects aged 50-59 years, according to gender n (%)

Gender finding type	40-49 yr	50-59 yr	Total	P value1	OR (95%CI)
All
Total colonoscopies	505	1245	1750
Adenomatous polyps	42 (8.3)	170 (13.7)	212 (12.1)	0.002	1.74 (1.22-2.49)
Advanced adenoma	5 (1.0)	30 (2.4)	35 (2.0)	0.060	2.47 (0.95-6.40)
Cancer	1 (0.2)	3 (0.2)	4 (0.2)	1.000	1.22 (0.13-11.73)
Men
Total colonoscopies	278	638	916
Adenomatous polyps	23 (8.3)	106 (16.6)	129 (14.1)	0.001	2.21 (1.37-3.55)
Advanced adenoma	1 (0.4)	22 (3.4)	23 (2.5)	0.005	9.89 (1.33-73.76)
Cancer	1 (0.4)	2 (0.3)	3 (0.3)	1.000	0.87 (0.08-9.65)
Women
Total colonoscopies	227	607	834
Adenomatous polyps	19 (8.4)	64 (10.5)	83 (10.0)	0.435	1.29 (0.76-2.21)
Advanced adenoma	4 (1.8)	8 (1.3)	12 (1.4)	0.744	0.75 (0.22-2.50)
Cancer	0 (0.0)	1 (0.2)	1 (0.1)	1.000	1

¹χ² statistical comparison of distribution of selected findings.