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Distribution of Key Variables

Women

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
	381,143	496,890	611,378	628,636	641,361	646,726	688,017	658,546	636,646	507,499	410,676	396,781

Unique women per year
One site contributes either no data or incomplete data for years 2004+
Another site contributes either no data or incomplete data for years 2005+
Data may not be complete for 2007 at all remaining sites

[Index of Tables]

Breast cancers

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Diagnosis year
	5,195	5,495	6,202	6,616	6,508	6,758	6,641	6,528	6,131	5,880	5,127	2,537

Unique diagnoses (at most 1 cancer per woman)
Two sites contribute either no cancer data or incomplete cancer data for years 2006+
Cancer data is not complete for 2007 across all remaining sites

[Index of Tables]

Exams

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
	430,187	560,323	687,394	721,813	739,590	754,611	803,026	767,867	741,167	579,172	466,288	453,182

All exams by year
One site contributes either no data or incomplete data for years 2004+
Another site contributes either no data or incomplete data for years 2005+
Data may not be complete for 2007 at all remaining sites

[Index of Tables]

Indication for exam

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
1: Routine screening	363,195	470,512	534,713	536,099	528,589	530,675	573,316	546,549	523,285	458,821	368,386	356,373
2: Additional evaluation	23,833	29,712	37,898	46,045	47,648	57,151	58,114	54,320	49,185	40,174	33,634	35,663
3: Short interval follow-up	8,237	14,873	21,247	23,907	25,441	25,799	26,081	23,843	20,976	18,098	15,858	15,276
4: Evaluation	30,347	39,898	52,746	60,285	60,353	60,985	63,873	62,239	61,106	51,895	35,029	36,802
5: Other	68	771	942	1,394	2,200	1,824	3,005	3,641	2,233	1,515	901	504
Missing	4,507	4,557	39,848	54,083	75,359	78,177	78,637	77,275	84,382	8,669	12,480	8,564

[Index of Tables]

Symptoms (self-reported)

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
0: No symptoms	290,496	394,019	515,948	524,684	519,351	536,215	566,774	526,601	504,144	446,379	373,329	365,412
1: Pain	4,345	3,885	3,108	4,168	6,836	12,926	15,235	13,048	13,285	13,272	11,172	10,409
2: Other	12,309	15,026	19,970	20,152	17,454	14,517	13,344	13,165	13,306	12,900	9,575	8,903
3: Nipple discharge	2,280	2,714	2,995	3,161	2,756	3,335	3,663	3,179	3,020	2,593	2,180	2,125
4: Lump	20,907	23,632	31,319	37,429	36,646	38,851	37,237	32,826	28,562	23,941	17,548	17,484
5: Symptoms, not otherwise specified	4,333	4,445	6,214	5,309	4,011	814	403	383	432	535	414	492
Missing	95,517	116,602	107,840	126,910	152,536	147,953	166,370	178,665	178,418	79,552	52,070	48,357

[Index of Tables]

Time since last mammogram

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
Missing	38,242	42,949	61,200	48,361	47,100	47,182	59,398	52,261	47,369	29,613	19,154	16,334
0: No previous mammogram	30,708	37,805	45,595	44,644	41,545	38,643	33,899	28,148	25,245	22,106	19,766	18,473
1: Within a year (0-11 months)	58,110	78,309	106,826	123,463	124,941	130,030	139,046	130,613	125,269	95,000	76,181	78,661
2: 1-2 years (12-35 months)	257,136	340,773	404,687	444,441	468,070	478,645	505,737	497,897	480,286	379,808	310,592	303,194
3: 3-4 years (36-59 months)	30,377	37,756	42,683	37,231	36,324	38,969	42,833	37,899	39,177	33,012	25,328	22,032
4: Five years or more (60+ months)	15,614	22,731	26,403	23,673	21,610	21,142	22,113	21,049	23,821	19,633	15,267	14,488

[Index of Tables]

Time since last clinical breast exam

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
Missing	323,906	421,268	570,870	584,161	584,381	562,955	573,200	541,352	495,108	331,308	241,873	226,068
0: None within the last 3 months / No other information	141	939	1,394	8,680	19,495	59,011	69,958	71,982	82,763	85,715	85,153	93,605
1: Within the last 3 months	24,860	16,023	3,405	10,701	22,054	89,095	113,195	108,433	119,536	116,855	101,713	99,058
2: 4 months to 1 year ago	11,587	7,204	889	899	.	12,961	24,242	23,710	21,560	21,451	16,199	14,786
3: More than 1 year ago	23,256	30,060	23,748	23,756	22,873	15,194	21,495	21,734	21,539	23,078	20,695	19,048
4: Never had a clinical breast exam	3,671	2,316	608	375	279	462	741	651	661	764	655	615
5: Within the last year	42,766	82,513	86,480	93,241	90,508	14,933	195	5	.	1	.	2

[Index of Tables]

Any mammogram performed

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
0: No	10,860	10,551	23,359	39,761	43,526	46,783	51,012	48,945	49,857	28,763	17,486	17,644
1: Yes	418,604	548,362	662,256	680,173	694,020	706,722	751,987	718,899	690,921	549,607	448,007	434,740
Missing	723	1,410	1,779	1,879	2,044	1,106	27	23	389	802	795	798

[Index of Tables]

Digital mammograms

	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
1: Right breast only	1	249	1,043	2,135	2,849	3,290	4,975	8,003
2: Left breast only	1	244	1,122	2,052	2,829	3,358	5,055	8,023
3: Unilateral, side not specified	.	45	91	106	104	107	199	318
4: Bilateral (both breasts)	3	3,025	15,405	35,115	53,011	64,157	77,619	110,307
5: Yes, woman-level information only	1	20	47	102	62	7,052	43,507	55,239
Missing	.	.	2	44	344	903	801	1,014

[Index of Tables]

Ultrasounds

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
0: No	362,030	485,730	616,843	654,745	668,347	665,924	696,711	669,483	622,097	475,713	377,089	386,927
1: Right breast only	2,685	5,141	7,740	9,708	8,938	10,975	14,256	13,491	12,884	11,513	10,266	10,829
2: Left breast only	3,058	5,841	8,760	10,862	9,857	12,668	15,815	14,691	14,685	12,889	11,483	11,865
3: Unilateral, side not specified	.	.	.	.	.	.	5,749	6,583	7,871	5,547	.	.
4: Bilateral (both breasts)	5,912	4,564	7,398	11,093	14,292	7,378	4,823	4,425	5,403	4,884	4,431	4,570
5: Yes, woman-level information only	3,191	4,778	12,387	15,952	19,716	25,928	20,613	20,249	17,629	5,740	4,672	5,869
Missing	53,311	54,269	34,266	19,453	18,440	31,738	45,059	38,945	60,598	62,886	58,347	33,122

[Index of Tables]

Breast density

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
1: Almost entirely fat (<25% fibroglandular)	21,805	29,153	33,879	34,538	31,721	37,230	35,929	36,332	35,852	33,047	26,761	29,833
2: Scattered fibroglandular tissue (25% - 50%)	90,128	140,005	175,939	201,392	189,310	206,007	219,333	215,585	204,488	172,253	127,463	126,208
3: Heterogeneously dense (50% - 75%)	68,826	115,618	151,848	176,885	182,486	197,453	203,872	183,384	165,977	146,852	122,006	125,791
4: Extremely dense (>75%)	20,032	28,723	35,320	35,376	36,706	38,405	38,246	35,423	31,639	28,541	26,406	26,006
Missing	77,150	76,880	75,263	51,839	44,211	53,014	54,817	51,597	56,257	53,547	67,961	49,373

Exams by year
Only includes breast density measured using the BI-RADS system
One site contributes either no data or incomplete data for years 2004+
Another site contributes either no data or incomplete data for years 2005+
Data may not be complete for 2007 at all remaining sites

[Index of Tables]

Radiologists

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
	425	567	594	621	609	541	565	564	516	469	380	358

Unique radiologists per year
One site contributes either no data or incomplete data for years 2004+
Another site contributes either no data or incomplete data for years 2005+
Data may not be complete for 2007 at all remaining sites

[Index of Tables]

Facilities where mammograms were taken

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
	240	252	221	196	184	177	171	171	164	148	107	101

Unique facilities per year
One site contributes either no data or incomplete data for years 2004+
Another site contributes either no data or incomplete data for years 2005+
Data may not be complete for 2007 at all remaining sites

[Index of Tables]

Facilities where mammograms were read

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
	137	148	148	143	146	139	136	139	132	121	90	85

[Index of Tables]

Age

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
18-24	525	620	901	1,282	1,511	1,424	1,493	1,490	1,382	881	643	610
25-29	1,473	1,646	2,448	3,133	3,123	3,112	2,925	2,831	2,585	1,823	1,323	1,307
30-34	5,405	5,876	8,341	8,953	9,189	9,446	9,359	8,400	7,530	4,899	3,820	3,528
35-39	23,706	27,789	36,994	38,421	38,687	38,053	36,215	31,159	27,705	19,350	15,557	14,096
40-44	60,715	80,749	101,796	105,869	108,294	108,836	114,054	105,962	101,037	75,235	60,201	55,960
45-49	68,073	88,638	109,359	114,586	117,814	119,333	126,269	119,367	114,884	85,970	69,136	65,879
50-54	65,131	89,993	111,183	116,366	120,976	126,413	131,962	124,331	119,047	91,218	73,170	70,324
55-59	50,969	67,062	81,736	86,577	90,128	94,072	108,384	107,583	106,113	85,229	69,980	67,481
60-64	42,733	54,830	64,504	67,639	69,542	72,073	79,080	78,686	78,485	63,903	52,317	55,539
65-69	40,174	50,963	58,645	59,662	60,031	60,199	64,281	62,659	61,758	51,195	40,699	40,785
70-74	34,178	43,253	50,833	52,683	52,169	51,896	54,911	52,122	49,854	40,689	31,656	31,002
75-79	22,295	29,182	35,750	38,736	39,517	39,549	41,722	40,532	38,699	31,611	25,078	24,292
80-84	10,534	14,004	17,322	18,916	19,730	20,929	22,507	22,699	22,111	18,783	15,392	15,052
85-89	3,554	4,750	6,248	7,033	7,264	7,481	8,001	8,122	8,125	6,831	5,905	5,950
90+	719	959	1,318	1,568	1,600	1,708	1,801	1,898	1,837	1,536	1,383	1,354

[Index of Tables]

Race

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
1: White, non-Hispanic	307,266	399,615	474,161	496,864	511,793	517,084	550,062	524,004	490,656	406,692	337,290	329,720
2: Black, non-Hispanic	17,377	25,481	33,223	36,507	38,422	39,005	43,463	37,250	29,435	26,792	27,872	28,346
3: Asian	12,482	21,472	28,355	29,417	32,598	35,259	40,715	38,931	41,880	43,985	44,295	43,689
4: Native Hawaiian or Pacific Islander	33	44	35	50	83	190	317	390	429	406	315	352
5: American Indian or Alaska Native	10,054	10,620	8,876	5,955	6,050	5,885	7,375	7,684	8,550	5,505	1,490	1,331
6: Other	1,866	2,716	2,940	3,292	3,222	3,475	3,621	3,495	3,121	2,774	2,605	2,740
7: Mixed (2+ races)	791	1,489	2,428	2,676	2,953	4,169	4,965	4,959	5,882	6,381	5,952	5,917
8: Hispanic	44,829	52,193	56,468	58,852	58,490	64,181	68,537	69,505	71,168	50,698	18,650	19,149
Missing	35,489	46,693	80,908	88,200	85,979	85,363	83,971	81,649	90,046	35,939	27,819	21,938

[Index of Tables]

Body mass index

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
Missing	223,462	286,837	398,711	418,731	429,742	422,247	434,050	389,746	329,451	215,598	200,654	181,681
18.5 or less (Underweight)	3,994	5,123	5,398	5,551	5,582	5,919	6,434	6,355	7,219	6,673	4,908	5,202
18.5 - 24.9 (Normal)	99,408	129,974	136,570	144,162	144,289	154,942	167,890	171,560	192,429	170,191	121,066	124,529
25.0 - 29.9 (Overweight)	63,945	83,836	88,266	91,828	94,155	100,223	112,215	114,876	121,773	106,088	76,356	77,456
30.0 - 34.9 (Obese I)	26,547	36,081	38,229	40,033	42,327	45,477	52,127	53,648	56,798	49,439	37,425	37,808
35.0 - 39.9 (Obese II)	8,373	12,110	12,970	13,737	15,085	16,346	19,100	20,048	21,025	19,168	15,717	15,922
40 or greater (Obese III)	4,458	6,362	7,250	7,771	8,410	9,457	11,210	11,634	12,472	12,015	10,162	10,584

[Index of Tables]

Highest level of education completed

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
Missing	166,722	183,975	215,203	221,280	222,337	238,206	251,650	247,113	246,833	145,075	73,326	68,831
1: < High school graduate	25,789	36,906	47,462	51,537	51,758	49,048	49,849	45,780	42,621	36,800	30,723	28,700
2: High school graduate or GED	72,305	102,338	126,894	131,220	135,016	131,352	138,958	129,464	120,804	101,300	87,256	82,741
3: Some college/technical school	75,227	105,708	129,600	137,834	141,344	140,548	149,666	140,448	132,647	115,020	103,189	100,575
4: College or post-college graduate	90,144	131,396	168,235	179,942	189,135	195,457	212,903	205,062	198,262	180,977	171,794	172,335

[Index of Tables]

Menopause

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
1: Yes	266,526	353,798	430,535	449,843	454,972	463,765	497,387	476,132	462,430	379,200	302,981	298,626
0: No	80,669	119,643	155,950	166,921	170,075	178,475	192,229	180,146	166,056	147,238	126,195	122,443
Missing	82,992	86,882	100,909	105,049	114,543	112,371	113,410	111,589	112,681	52,734	37,112	32,113

[Index of Tables]

Current hormone therapy use

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
0: No	170,711	271,656	369,744	395,547	391,187	409,544	453,969	477,056	478,018	439,583	367,709	363,498
1: Yes	76,786	117,958	163,855	175,052	170,320	167,877	152,957	105,876	81,677	60,050	35,122	30,734
Missing	182,690	170,709	153,795	151,214	178,083	177,190	196,100	184,935	181,472	79,539	63,457	58,950

[Index of Tables]

Previous breast cancer

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
0: No	259,963	310,996	337,151	360,692	375,719	465,345	567,122	563,861	546,072	486,652	401,205	395,489
1: Yes	29,962	40,836	50,697	58,092	63,132	52,707	49,995	48,834	46,619	39,092	31,608	31,805
Missing	140,262	208,491	299,546	303,029	300,739	236,559	185,909	155,172	148,476	53,428	33,475	25,888

[Index of Tables]

Family history of breast cancer

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
0: No	250,005	315,983	442,069	520,830	509,380	505,080	538,450	515,704	497,751	436,689	354,873	347,953
1: Yes	43,236	54,587	70,501	77,766	81,162	84,795	92,438	93,504	94,192	84,062	68,965	69,797
Missing	136,946	189,753	174,824	123,217	149,048	164,736	172,138	158,659	149,224	58,421	42,450	35,432

[Index of Tables]

Ever given birth

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
Missing	177,891	237,485	329,867	344,566	358,533	365,426	384,294	351,232	312,282	196,058	162,486	149,247
0: No	42,119	52,402	60,068	68,105	74,292	70,203	74,948	74,622	77,728	72,945	64,321	68,468
1: Yes	210,177	270,436	297,459	309,142	306,765	318,982	343,784	342,013	351,157	310,169	239,481	235,467

[Index of Tables]

Age at first birth

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
Missing	189,252	253,092	345,821	354,945	367,516	376,775	396,197	373,330	334,926	215,571	168,355	155,467
Nulliparous	41,965	52,071	59,676	67,654	73,770	69,620	74,150	73,792	76,897	71,745	62,855	64,364
< 20	24,940	37,330	45,645	52,129	52,793	51,929	55,726	52,319	53,076	47,575	37,396	36,476
20-24	46,063	66,861	77,807	87,320	87,972	83,781	87,819	83,316	82,679	75,921	62,438	58,864
25-29	24,644	36,582	42,149	48,652	49,312	46,950	49,396	47,958	48,095	46,055	40,202	39,360
30-34	9,538	14,480	16,858	19,606	20,413	19,121	20,740	20,520	20,726	19,893	17,945	17,950
35-39	3,308	4,739	5,658	6,596	6,883	6,441	7,106	7,090	7,201	7,243	6,544	6,568
40+	935	1,505	2,181	2,415	2,643	2,640	3,158	3,195	3,604	3,920	3,980	4,360
Age only reported as <30	76,969	79,608	75,979	66,878	61,587	78,689	86,809	85,340	90,020	67,687	42,151	43,592
Age only reported as >=30	12,573	14,055	15,620	15,618	16,701	18,665	21,925	21,007	23,943	23,562	24,422	26,181

[Index of Tables]

Age at menarche

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
Missing	332,126	404,030	502,327	526,254	532,811	538,045	573,763	539,894	512,860	345,666	243,777	238,174
No menarche	48	64	73	84	107	123	113	126	155	145	164	163
Age only reported as <=10	1,925	4,748	5,347	5,146	4,806	2,708	1,484	1,359	1,430	1,559	1,632	3,493
<=12	40,630	65,121	77,360	81,776	86,526	90,433	95,956	95,263	95,053	97,200	92,304	87,096
15+	11,074	17,033	19,946	21,074	22,273	24,367	25,841	25,652	25,464	26,707	25,372	25,268
13	30,832	48,267	57,387	60,970	65,202	69,579	74,818	74,888	75,218	76,381	73,065	70,049
14	13,552	21,060	24,954	26,509	27,865	29,356	31,051	30,685	30,987	31,514	29,974	28,939

[Index of Tables]

Covered by Medicare

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
Missing	119,588	266,711	265,413	225,295	242,604	353,851	402,348	405,718	434,205	390,893	310,741	308,423
0: No	262,300	232,351	342,772	405,504	405,387	322,870	319,691	284,884	242,829	143,997	117,699	108,320
1: Yes	48,299	61,261	79,209	91,014	91,599	77,890	80,987	77,265	64,133	44,282	37,848	36,439

[Index of Tables]

Covered by Medicaid

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
Missing	144,352	287,033	295,934	262,966	278,436	357,595	405,298	408,628	436,932	391,246	310,740	308,405
0: No	279,686	263,562	377,521	441,983	446,688	386,148	385,126	347,220	294,780	181,078	149,605	139,322
1: Yes	6,149	9,728	13,939	16,864	14,466	10,868	12,602	12,019	9,455	6,848	5,943	5,455

[Index of Tables]

Covered by private insurance

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
Missing	370,924	445,029	546,813	559,942	570,972	655,590	705,810	676,769	671,781	531,638	440,257	432,498
0: No	12,176	39,661	54,634	71,827	76,164	66,754	61,095	56,772	41,497	28,827	16,995	13,624
1: Yes	47,087	75,633	85,947	90,044	92,454	32,267	36,121	34,326	27,889	18,707	9,036	7,060

[Index of Tables]

Covered by managed care insurance

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
Missing	371,826	455,540	567,554	588,264	602,205	620,172	670,669	628,244	620,404	484,641	393,239	384,850
0: No	16,171	43,850	55,236	62,661	61,910	56,997	53,000	61,881	56,441	35,125	21,467	17,633
1: Yes	42,190	60,933	64,604	70,888	75,475	77,442	79,357	77,742	64,322	59,406	51,582	50,699

[Index of Tables]

Maintained by the Applied Research Program,
Division of Cancer Control and Population Sciences