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Distribution of Key Variables

Women

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
	5.7	7.4	9.1	9.4	9.6	9.6	10.3	9.8	9.5	7.6	6.1	5.9

Unique women per year, Row percents
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
	7.5	7.9	8.9	9.5	9.3	9.7	9.5	9.4	8.8	8.4	7.4	3.6

Unique diagnoses (at most 1 cancer per woman), Row percents
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
	5.6	7.3	8.9	9.4	9.6	9.8	10.4	10.0	9.6	7.5	6.1	5.9

All exams by year, Row percents
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	85.3	84.7	82.6	80.3	79.6	78.5	79.1	79.1	79.7	80.4	81.2	80.2
2: Additional evaluation	5.6	5.3	5.9	6.9	7.2	8.4	8.0	7.9	7.5	7.0	7.4	8.0
3: Short interval follow-up	1.9	2.7	3.3	3.6	3.8	3.8	3.6	3.5	3.2	3.2	3.5	3.4
4: Evaluation	7.1	7.2	8.1	9.0	9.1	9.0	8.8	9.0	9.3	9.1	7.7	8.3
5: Other	0.0	0.1	0.1	0.2	0.3	0.3	0.4	0.5	0.3	0.3	0.2	0.1

All exams by year, Column percents among non-missing values—see Ns for rates of missing
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]

Symptoms (self-reported)

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
0: No symptoms	86.8	88.8	89.0	88.2	88.5	88.4	89.0	89.4	89.6	89.3	90.1	90.3
1: Pain	1.3	0.9	0.5	0.7	1.2	2.1	2.4	2.2	2.4	2.7	2.7	2.6
2: Other	3.7	3.4	3.4	3.4	3.0	2.4	2.1	2.2	2.4	2.6	2.3	2.2
3: Nipple discharge	0.7	0.6	0.5	0.5	0.5	0.5	0.6	0.5	0.5	0.5	0.5	0.5
4: Lump	6.2	5.3	5.4	6.3	6.2	6.4	5.8	5.6	5.1	4.8	4.2	4.3
5: Symptoms, not otherwise specified	1.3	1.0	1.1	0.9	0.7	0.1	0.1	0.1	0.1	0.1	0.1	0.1

[Index of Tables]

Time since last mammogram

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
0: No previous mammogram	7.8	7.3	7.3	6.6	6.0	5.5	4.6	3.9	3.6	4.0	4.4	4.2
1: Within a year (0-11 months)	14.8	15.1	17.1	18.3	18.0	18.4	18.7	18.3	18.1	17.3	17.0	18.0
2: 1-2 years (12-35 months)	65.6	65.9	64.6	66.0	67.6	67.7	68.0	69.6	69.2	69.1	69.5	69.4
3: 3-4 years (36-59 months)	7.8	7.3	6.8	5.5	5.2	5.5	5.8	5.3	5.6	6.0	5.7	5.0
4: Five years or more (60+ months)	4.0	4.4	4.2	3.5	3.1	3.0	3.0	2.9	3.4	3.6	3.4	3.3

[Index of Tables]

Time since last clinical breast exam

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
0: None within the last 3 months / No other information	0.1	0.7	1.2	6.3	12.6	30.8	30.4	31.8	33.6	34.6	37.9	41.2
1: Within the last 3 months	23.4	11.5	2.9	7.8	14.2	46.5	49.3	47.9	48.6	47.1	45.3	43.6
2: 4 months to 1 year ago	10.9	5.2	0.8	0.7	.	6.8	10.5	10.5	8.8	8.7	7.2	6.5
3: More than 1 year ago	21.9	21.6	20.4	17.3	14.7	7.9	9.4	9.6	8.8	9.3	9.2	8.4
4: Never had a clinical breast exam	3.5	1.7	0.5	0.3	0.2	0.2	0.3	0.3	0.3	0.3	0.3	0.3
5: Within the last year	40.2	59.3	74.2	67.7	58.3	7.8	0.1	0.0	.	0.0	.	0.0

[Index of Tables]

Any mammogram performed

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
0: No	2.5	1.9	3.4	5.5	5.9	6.2	6.4	6.4	6.7	5.0	3.8	3.9
1: Yes	97.5	98.1	96.6	94.5	94.1	93.8	93.6	93.6	93.3	95.0	96.2	96.1

[Index of Tables]

Digital mammograms

	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
1: Right breast only	16.7	6.9	5.9	5.4	4.8	4.2	3.8	4.4
2: Left breast only	16.7	6.8	6.3	5.2	4.8	4.3	3.8	4.4
3: Unilateral, side not specified	.	1.3	0.5	0.3	0.2	0.1	0.2	0.2
4: Bilateral (both breasts)	50.0	84.4	87.0	88.9	90.1	82.3	59.1	60.6
5: Yes, woman-level information only	16.7	0.6	0.3	0.3	0.1	9.0	33.1	30.4

[Index of Tables]

Ultrasounds

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
1: Right breast only	18.1	25.3	21.3	20.4	16.9	19.3	23.3	22.7	22.0	28.4	33.3	32.7
2: Left breast only	20.6	28.7	24.1	22.8	18.7	22.2	25.8	24.7	25.1	31.8	37.2	35.8
3: Unilateral, side not specified	.	.	.	.	.	.	9.4	11.1	13.5	13.7	.	.
4: Bilateral (both breasts)	39.8	22.5	20.4	23.3	27.1	13.0	7.9	7.4	9.2	12.0	14.4	13.8
5: Yes, woman-level information only	21.5	23.5	34.1	33.5	37.3	45.5	33.7	34.1	30.1	14.1	15.1	17.7

[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)	10.9	9.3	8.5	7.7	7.2	7.8	7.2	7.7	8.2	8.7	8.8	9.7
2: Scattered fibroglandular tissue (25% - 50%)	44.9	44.7	44.3	44.9	43.0	43.0	44.1	45.8	46.7	45.2	42.1	41.0
3: Heterogeneously dense (50% - 75%)	34.3	36.9	38.3	39.5	41.5	41.2	41.0	39.0	37.9	38.6	40.3	40.9
4: Extremely dense (>75%)	10.0	9.2	8.9	7.9	8.3	8.0	7.7	7.5	7.2	7.5	8.7	8.4

Exams by year, Column percents among non-missing values—see Ns for rates of missing
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
	6.8	9.1	9.6	10.0	9.8	8.7	9.1	9.1	8.3	7.6	6.1	5.8

Unique radiologists per year, Row percents
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
	11.3	11.8	10.4	9.2	8.6	8.3	8.0	8.0	7.7	6.9	5.0	4.7

Unique facilities per year, Row percents
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
	8.8	9.5	9.5	9.1	9.3	8.9	8.7	8.9	8.4	7.7	5.8	5.4

[Index of Tables]

Age

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
18-24	0.1	0.1	0.1	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.1	0.1
25-29	0.3	0.3	0.4	0.4	0.4	0.4	0.4	0.4	0.3	0.3	0.3	0.3
30-34	1.3	1.0	1.2	1.2	1.2	1.3	1.2	1.1	1.0	0.8	0.8	0.8
35-39	5.5	5.0	5.4	5.3	5.2	5.0	4.5	4.1	3.7	3.3	3.3	3.1
40-44	14.1	14.4	14.8	14.7	14.6	14.4	14.2	13.8	13.6	13.0	12.9	12.3
45-49	15.8	15.8	15.9	15.9	15.9	15.8	15.7	15.5	15.5	14.8	14.8	14.5
50-54	15.1	16.1	16.2	16.1	16.4	16.8	16.4	16.2	16.1	15.8	15.7	15.5
55-59	11.8	12.0	11.9	12.0	12.2	12.5	13.5	14.0	14.3	14.7	15.0	14.9
60-64	9.9	9.8	9.4	9.4	9.4	9.6	9.8	10.2	10.6	11.0	11.2	12.3
65-69	9.3	9.1	8.5	8.3	8.1	8.0	8.0	8.2	8.3	8.8	8.7	9.0
70-74	7.9	7.7	7.4	7.3	7.1	6.9	6.8	6.8	6.7	7.0	6.8	6.8
75-79	5.2	5.2	5.2	5.4	5.3	5.2	5.2	5.3	5.2	5.5	5.4	5.4
80-84	2.4	2.5	2.5	2.6	2.7	2.8	2.8	3.0	3.0	3.2	3.3	3.3
85-89	0.8	0.8	0.9	1.0	1.0	1.0	1.0	1.1	1.1	1.2	1.3	1.3
90+	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.3	0.3	0.3

[Index of Tables]

Race

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
1: White, non-Hispanic	77.8	77.8	78.2	78.4	78.3	77.3	76.5	76.4	75.4	74.9	76.9	76.5
2: Black, non-Hispanic	4.4	5.0	5.5	5.8	5.9	5.8	6.0	5.4	4.5	4.9	6.4	6.6
3: Asian	3.2	4.2	4.7	4.6	5.0	5.3	5.7	5.7	6.4	8.1	10.1	10.1
4: Native Hawaiian or Pacific Islander	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.1	0.1	0.1	0.1	0.1
5: American Indian or Alaska Native	2.5	2.1	1.5	0.9	0.9	0.9	1.0	1.1	1.3	1.0	0.3	0.3
6: Other	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.6	0.6
7: Mixed (2+ races)	0.2	0.3	0.4	0.4	0.5	0.6	0.7	0.7	0.9	1.2	1.4	1.4
8: Hispanic	11.4	10.2	9.3	9.3	8.9	9.6	9.5	10.1	10.9	9.3	4.3	4.4

[Index of Tables]

Body mass index

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
18.5 or less (Underweight)	1.9	1.9	1.9	1.8	1.8	1.8	1.7	1.7	1.8	1.8	1.8	1.9
18.5 - 24.9 (Normal)	48.1	47.5	47.3	47.6	46.6	46.6	45.5	45.4	46.7	46.8	45.6	45.9
25.0 - 29.9 (Overweight)	30.9	30.7	30.6	30.3	30.4	30.2	30.4	30.4	29.6	29.2	28.7	28.5
30.0 - 34.9 (Obese I)	12.8	13.2	13.2	13.2	13.7	13.7	14.1	14.2	13.8	13.6	14.1	13.9
35.0 - 39.9 (Obese II)	4.1	4.4	4.5	4.5	4.9	4.9	5.2	5.3	5.1	5.3	5.9	5.9
40 or greater (Obese III)	2.2	2.3	2.5	2.6	2.7	2.8	3.0	3.1	3.0	3.3	3.8	3.9

[Index of Tables]

Highest level of education completed

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
1: < High school graduate	9.8	9.8	10.1	10.3	10.0	9.5	9.0	8.8	8.6	8.5	7.8	7.5
2: High school graduate or GED	27.4	27.2	26.9	26.2	26.1	25.4	25.2	24.9	24.4	23.3	22.2	21.5
3: Some college/technical school	28.6	28.1	27.4	27.5	27.3	27.2	27.1	27.0	26.8	26.5	26.3	26.2
4: College or post-college graduate	34.2	34.9	35.6	36.0	36.6	37.8	38.6	39.4	40.1	41.7	43.7	44.8

[Index of Tables]

Menopause

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
1: Yes	76.8	74.7	73.4	72.9	72.8	72.2	72.1	72.6	73.6	72.0	70.6	70.9
0: No	23.2	25.3	26.6	27.1	27.2	27.8	27.9	27.4	26.4	28.0	29.4	29.1

[Index of Tables]

Current hormone therapy use

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
0: No	69.0	69.7	69.3	69.3	69.7	70.9	74.8	81.8	85.4	88.0	91.3	92.2
1: Yes	31.0	30.3	30.7	30.7	30.3	29.1	25.2	18.2	14.6	12.0	8.7	7.8

[Index of Tables]

Previous breast cancer

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
0: No	89.7	88.4	86.9	86.1	85.6	89.8	91.9	92.0	92.1	92.6	92.7	92.6
1: Yes	10.3	11.6	13.1	13.9	14.4	10.2	8.1	8.0	7.9	7.4	7.3	7.4

[Index of Tables]

Family history of breast cancer

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
0: No	85.3	85.3	86.2	87.0	86.3	85.6	85.3	84.7	84.1	83.9	83.7	83.3
1: Yes	14.7	14.7	13.8	13.0	13.7	14.4	14.7	15.3	15.9	16.1	16.3	16.7

[Index of Tables]

Ever given birth

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
0: No	16.7	16.2	16.8	18.1	19.5	18.0	17.9	17.9	18.1	19.0	21.2	22.5
1: Yes	83.3	83.8	83.2	81.9	80.5	82.0	82.1	82.1	81.9	81.0	78.8	77.5

[Index of Tables]

Age at first birth

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
Nulliparous	17.4	16.9	17.5	18.4	19.8	18.4	18.2	18.7	18.9	19.7	21.1	21.6
< 20	10.4	12.2	13.4	14.2	14.2	13.7	13.7	13.3	13.1	13.1	12.6	12.3
20-24	19.1	21.8	22.8	23.8	23.6	22.2	21.6	21.1	20.4	20.9	21.0	19.8
25-29	10.2	11.9	12.3	13.3	13.3	12.4	12.1	12.2	11.8	12.7	13.5	13.2
30-34	4.0	4.7	4.9	5.3	5.5	5.1	5.1	5.2	5.1	5.5	6.0	6.0
35-39	1.4	1.5	1.7	1.8	1.8	1.7	1.7	1.8	1.8	2.0	2.2	2.2
40+	0.4	0.5	0.6	0.7	0.7	0.7	0.8	0.8	0.9	1.1	1.3	1.5
Age only reported as <30	31.9	25.9	22.2	18.2	16.6	20.8	21.3	21.6	22.2	18.6	14.1	14.6
Age only reported as >=30	5.2	4.6	4.6	4.3	4.5	4.9	5.4	5.3	5.9	6.5	8.2	8.8

[Index of Tables]

Age at menarche

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
No menarche	0.0	0.0	0.0	0.0	0.1	0.1	0.0	0.1	0.1	0.1	0.1	0.1
Age only reported as <=10	2.0	3.0	2.9	2.6	2.3	1.3	0.6	0.6	0.6	0.7	0.7	1.6
<=12	41.4	41.7	41.8	41.8	41.8	41.8	41.9	41.8	41.6	41.6	41.5	40.5
15+	11.3	10.9	10.8	10.8	10.8	11.3	11.3	11.3	11.2	11.4	11.4	11.8
13	31.4	30.9	31.0	31.2	31.5	32.1	32.6	32.8	32.9	32.7	32.8	32.6
14	13.8	13.5	13.5	13.6	13.5	13.6	13.5	13.5	13.6	13.5	13.5	13.5

[Index of Tables]

Covered by Medicare

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
0: No	84.4	79.1	81.2	81.7	81.6	80.6	79.8	78.7	79.1	76.5	75.7	74.8
1: Yes	15.6	20.9	18.8	18.3	18.4	19.4	20.2	21.3	20.9	23.5	24.3	25.2

[Index of Tables]

Covered by Medicaid

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
0: No	97.8	96.4	96.4	96.3	96.9	97.3	96.8	96.7	96.9	96.4	96.2	96.2
1: Yes	2.2	3.6	3.6	3.7	3.1	2.7	3.2	3.3	3.1	3.6	3.8	3.8

[Index of Tables]

Covered by private insurance

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
0: No	20.5	34.4	38.9	44.4	45.2	67.4	62.8	62.3	59.8	60.6	65.3	65.9
1: Yes	79.5	65.6	61.1	55.6	54.8	32.6	37.2	37.7	40.2	39.4	34.7	34.1

[Index of Tables]

Covered by managed care insurance

	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
	Exam year
0: No	27.7	41.8	46.1	46.9	45.1	42.4	40.0	44.3	46.7	37.2	29.4	25.8
1: Yes	72.3	58.2	53.9	53.1	54.9	57.6	60.0	55.7	53.3	62.8	70.6	74.2

[Index of Tables]

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