Table 2.

Cumulative risk over the age range 0-74 years of developing colorectal cancer by gender and subsite according to birth cohort

	1900	1905	1910	1915	1920	1925	1930	1935	1940	1945	1950
Males
All sites	3.94	4.20	4.42	4.60	4.73	4.82	4.85	4.83	4.75	4.63	4.46
Right Colon	0.53	0.62	0.72	0.82	0.92	1.01	1.09	1.15	1.19	1.21	1.20
Left Colon	0.24	0.26	0.29	0.31	0.33	0.35	0.37	0.39	0.40	0.41	0.42
Sigmoid	1.59	1.56	1.52	1.48	1.44	1.39	1.33	1.27	1.21	1.15	1.08
Rectum	2.44	2.42	2.39	2.33	2.26	2.18	2.08	1.97	1.86	1.74	1.61
Females
All sites	2.68	2.67	2.66	2.66	2.67	2.68	2.70	2.73	2.76	2.80	2.85
Right Colon	0.55	0.61	0.66	0.71	0.75	0.78	0.80	0.81	0.81	0.80	0.77
Left Colon	0.14	0.15	0.15	0.17	0.18	0.19	0.21	0.22	0.24	0.27	0.29
Sigmoid	0.88	0.82	0.78	0.74	0.72	0.71	0.71	0.72	0.73	0.76	0.80
Rectum	1.09	1.04	1.00	0.97	0.95	0.94	0.95	0.96	0.98	1.01	1.05