Table 1.

Breast cancer incidence rates and estimated prevalence.

Age	Invasive*	DCIS†	Total	DCIS	Sojourn	Prevalence‡	Low§	High
	Annual incidence per 1000 women	Annual incidence per 1000 women	Annual incidence per 1000 women	% of all breast cancer	Years	Cases/1000
35.0	0.44	0.07	0.51	14	2.0	1.03
37.5	0.62	0.11	0.73	15	2.0	1.46
40.0	0.91	0.24	1.15	21	2.0	2.30
42.5	1.20	0.36	1.57	23	2.1	3.24	2.9	3.7
45.0	1.58	0.48	2.06	23	2.2	4.39	3.9	4.9
47.5	1.95	0.60	2.55	24	2.4	6.08	5.3	7.0
50.0	2.25	0.70	2.95	24	2.7	7.78	6.7	9.0
52.5	2.56	0.80	3.36	24	2.9	9.68	8.1	11.3
55.0	2.96	0.86	3.82	23	3.1	11.97	9.9	14.1
57.5	3.36	0.92	4.28	22	3.4	14.56	12.1	17.2
60.0	3.65	0.95	4.60	21	3.7	16.86
62.5	3.95	0.97	4.92	20	3.9	19.34
65.0	4.18	1.00	5.18	19	4.2	21.76

* Incidence rate data from SEER 1998–2002. [19]

^† Ductal carcinoma in situ.

^‡ Prevalence is incidence rate (Invasive + DCIS) times sojourn time. [20-23]

^§ Low and high ranges apply the low and high values for sojourn time.