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Table 2: Number of deaths where breast cancer was the underlying cause of death, by sex and strategic health authority (SHA)( 1) , 1996 to 2006( 2)
SHA	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006
Male
England	63	66	73	62	68	77	79	64	53	78	59
North East	5	3	4	3	2	2	7	6	2	3	5
North West	6	7	7	12	7	10	8	7	6	6	9
Yorkshire and the Humber	5	9	9	9	6	7	7	5	8	5	6
East Midlands	4	7	5	7	3	15	12	4	7	10	7
West Midlands	9	4	12	8	13	10	9	8	3	13	9
East of England	6	10	9	4	7	5	8	9	6	8	4
London	6	8	8	9	4	11	9	9	5	11	9
South East Coast	5	7	9	4	9	6	8	1	6	9	2
South Central	6	2	1	3	7	4	7	8	3	7	2
South West	11	9	9	3	10	7	4	7	7	6	6
Female
England	11,471	11,255	11,025	10,803	10,631	10,860	10,795	10,501	10,288	10,297	10,243
North East	575	607	567	542	516	555	508	471	522	550	527
North West	1,595	1,548	1,480	1,538	1,455	1,539	1,497	1,418	1,374	1,385	1,394
Yorkshire and the Humber	1,204	1,067	1,005	1,052	1,017	1,050	1,043	1,009	1,040	956	1,004
East Midlands	1,006	987	917	900	893	984	908	912	891	929	918
West Midlands	1,322	1,271	1,193	1,213	1,137	1,100	1,187	1,149	1,143	1,090	1,102
East of England	1,225	1,263	1,363	1,192	1,241	1,229	1,278	1,241	1,150	1,224	1,202
London	1,440	1,436	1,336	1,322	1,335	1,332	1,306	1,296	1,235	1,182	1,155
South East Coast	1,014	972	1,017	1,008	983	1,027	1,041	986	983	1,009	1,025
South Central	802	823	912	862	813	817	798	798	788	776	746
South West	1,288	1,281	1,235	1,174	1,241	1,227	1,229	1,221	1,162	1,196	1,170
(1) Breast cancer was defined using the International Classification of Diseases, Ninth Revision (ICD-9) codes 174 and 175 for the years 1996 to 2000, and the International Classification of Diseases, Tenth Revision (ICD-10) code C50 for the years 2001 to 2006. The introduction of ICD-10 in 2001 had a significant effect on mortality rates for some diseases, causing a discontinuity in mortality trends for these causes of death. However ONS practice is not to adjust the historical numbers of deaths shown in PQ answers. More information on this issue can be found at www.statistics.gov.uk/icd10mortality. For female breast cancer the introduction of ICD-10 caused an increase of 2.7 per cent. in the number of deaths. An article specifically examining the changes for cancer trends was published in Health Statistics Quarterly 23*. This article also presents comparability ratios (the ratio of the number of deaths coded to a cause in ICD-10 to the number coded to the equivalent cause in ICD-9) for the most common cancer sites. * Brock A, Griffiths C, Rooney C (2004) The effect of the introduction of ICD-10 on cancer mortality trends in England and Wales. Health Statistics Quarterly 23, 7-17 (2) Figures are for deaths registered in each calendar year.

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