Five-year Breast Cancer Incidence by Stage at Diagnosis
Allegan County Health Department District Female Residents, 1985-2020

Year of Diagnosis	Total	In Situ		Localized		Regional		Distant		Unknown
		Number	Percent	Number	Percent	Number	Percent	Number	Percent	Number	Percent
2016-2020	584	112	19.2	324	55.5	124	21.2	16	2.7	8	1.4
2015-2019	526	102	19.4	285	54.2	112	21.3	15	2.9	12	2.3
2014-2018	509	104	20.4	277	54.4	100	19.6	14	2.8	14	2.8
2013-2017	502	115	22.9	261	52.0	98	19.5	13	2.6	15	3.0
2012-2016	499	120	24.0	251	50.3	94	18.8	17	3.4	17	3.4
2011-2015	481	120	24.9	256	53.2	73	15.2	15	3.1	17	3.5
2010-2014	479	123	25.7	250	52.2	74	15.4	16	3.3	16	3.3
2009-2013	482	114	23.7	258	53.5	80	16.6	15	3.1	15	3.1
2008-2012	466	103	22.1	251	53.9	85	18.2	13	2.8	14	3.0
2007-2011	445	93	20.9	231	51.9	99	22.2	8	1.8	14	3.1
2006-2010	426	83	19.5	221	51.9	102	23.9	7	1.6	13	3.1
2005-2009	445	84	18.9	232	52.1	105	23.6	11	2.5	13	2.9
2004-2008	419	81	19.3	200	47.7	108	25.8	10	2.4	20	4.8
2003-2007	387	73	18.9	182	47.0	103	26.6	10	2.6	19	4.9
2002-2006	380	71	18.7	190	50.0	89	23.4	9	2.4	21	5.5
2001-2005	356	67	18.8	167	46.9	83	23.3	9	2.5	30	8.4
2000-2004	324	55	17.0	152	46.9	82	25.3	3	0.9	32	9.9
1999-2003	333	52	15.6	174	52.3	73	21.9	4	1.2	30	9.0
1998-2002	317	51	16.1	152	47.9	64	20.2	8	2.5	42	13.2
1997-2001	312	52	16.7	138	44.2	65	20.8	11	3.5	46	14.7
1996-2000	304	46	15.1	135	44.4	63	20.7	13	4.3	47	15.5
1995-1999	333	43	12.9	151	45.3	67	20.1	16	4.8	56	16.8
1994-1998	316	41	13.0	133	42.1	69	21.8	16	5.1	57	18.0
1993-1997	312	37	11.9	138	44.2	66	21.2	12	3.8	59	18.9
1992-1996	305	29	9.5	143	46.9	63	20.7	9	3.0	61	20.0
1991-1995	307	30	9.8	145	47.2	63	20.5	10	3.3	59	19.2
1990-1994	271	26	9.6	130	48.0	55	20.3	7	2.6	53	19.6
1989-1993	263	24	9.1	123	46.8	49	18.6	7	2.7	60	22.8
1988-1992	257	25	9.7	122	47.5	47	18.3	7	2.7	56	21.8
1987-1991	242	19	7.9	109	45.0	38	15.7	9	3.7	67	27.7
1986-1990	224	18	8.0	93	41.5	36	16.1	5	2.2	72	32.1
1985-1989	222	19	8.6	86	38.7	31	14.0	9	4.1	77	34.7

Notes:
In Situ Stage represents the presence of malignant cells within the cell group from which they arose, with no penetration of basement membrane of the tissue and no stromal invasion.
Localized Stage represents invasive cancer confined to the organ of origin or intralumenal extension where specified as an intralumenal extension to immediately contiguous segments of the large bowel.
Regional Stage represents direct extension to adjacent organs or tissues or involvement of the regional lymph nodes.
Distant Stage represents direct continuity to non-adjacent organs, discontinuous metastasis or involvement of the distant lymph nodes.
COVID-19 Pandemic: In 2020, the highly publicized impact of the COVID-19 pandemic on health services and the consequential delays and reductions in cancer screening and diagnosis led to a decline in the 2020 incidence rates for most cancer sites. Because 2020 was a temporary, anomalous year, it can bias estimates such as cancer incidence trends.
Source : Michigan Resident Cancer Incidence File. Updated with cases processed through November 30, 2022. Division for Vital Records & Health Statistics, Michigan Department of Health & Human Services.
Last Updated : April 13, 2023