Table 5. Cases of breast and ovarian cancer estimated to be due to sub-optimal breast feeding, UK 2010.

	Breast				Ovary
Age (years)	Relative risk	Observed cases	Excess attributable cases	PAF (%)	Relative risk	Observed cases	Excess attributable cases	PAF (%)
0–4	1	2	0	—	1	2	0	—
5–9	1	0	0	—	1	4	2	—
10–14	1	0	0	—	1	6	3	—
15–19	1.0005	4	0	0.1	1.0026	23	0	0.3
20–24	1.0044	32	0	0.4	1.0234	57	1	2.3
25–29	1.0114	167	2	1.1	1.0646	90	5	6.1
30–34	1.0194	548	10	1.9	1.1171	103	11	10.5
35–39	1.0258	1265	32	2.5	1.1639	160	23	14.1
40–44	1.0291	2593	73	2.8	1.1885	278	44	15.9
45–49	1.0298	4236	123	2.9	1.1950	428	70	16.3
50–54	1.0303	4810	141	2.9	1.1999	498	83	16.7
55–59	1.0306	5582	166	3.0	1.2026	623	105	16.8
60–64	1.0329	6459	206	3.2	1.2232	883	161	18.2
65–69	1.0353	6403	219	3.4	1.2448	852	168	19.7
70–74	1.0363	4332	152	3.5	1.2538	828	168	20.2
75–79	1.0355	4058	139	3.4	1.2463	734	145	19.8
80–84	1.0318	3526	109	3.1	1.2134	616	108	17.6
⩾85	1.0299	4367	127	2.9	1.1973	635	105	16.5
All ages		48 385	1498	3.1		6820	1201	17.6

Abbreviation: PAF=population-attributable fraction.