Table 2 Number of person years at risk, screen-detected breast cancers, interval breast cancers, other breast cancers, and breast cancer deaths by density code and age at diagnosis

	Fatty breasts						Mixed/dense breasts
		Breast cancer cases ^a						Breast cancer cases ^a
Age (years)	Person years breast cancer mortality	S ^b	I ^c	O ^d	Total	Breast cancer deaths	Person years breast cancer mortality	S ^b	I ^c	O ^d	Total	Breast cancer deaths
50–54	14 811	5	4	0	9	0	31 435	33	39	8	80	3
55–59	30 621	24	11	8	43	3	40 464	88	56	22	166	7
60–64	33 710	55	15	13	83	6	30 541	80	52	36	168	14
65–69	37 236	53	18	12	83	12	27 242	86	38	18	142	12
70–74	32 072	22	17	27	66	11	21 347	25	29	55	109	9
75–79	10 500	0	0	31	31	5	6565	0	0	29	29	8
Total	158 950	159^e	65^e	91	315	37	157 594	312^e	214^e	168	694	53

Abbreviation: CI=confidence intervals; DCIS=ductal carcinoma in situ.
^aInvasive breast cancer and DCIS.
^bScreen-detected breast cancer.
^cBreast cancer diagnosed <2 years after the last screening date.
^dBreast cancer diagnosed ⩾2 years after the last screening date.
^eAge-adjusted odds ratio of interval cancer versus screen-detected cancer in women with two-view compared with women with one-view mammography 1.62 (95% CI 1.14–2.30).

Quick links

Search