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Distribution of Key Variables

Women

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
	5.2	6.8	8.5	8.8	8.9	9.0	9.6	9.4	9.1	7.4	6.0	5.9	5.4

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 2008 at all remaining sites.

[Index of Tables]

Breast cancers

	Diagnosis year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
	6.9	7.3	8.3	8.8	8.6	9.0	8.8	8.7	8.2	8.0	7.4	6.4	3.5

One site contributes either no cancer data or incomplete cancer data for years 2006+.
Another site contributes either no cancer data or incomplete cancer data for years 2007+.
Cancer data is not complete for 2008 across all remaining sites.

[Index of Tables]

Exams

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
	5.0	6.6	8.4	8.8	9.0	9.2	9.8	9.5	9.2	7.3	5.9	5.9	5.4

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 2008 at all remaining sites.

[Index of Tables]

Indication for exam

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
1: Routine screening	84.8	84.2	82.6	80.3	79.7	78.6	79.2	79.7	80.1	81.1	82.0	81.0	80.7
2: Additional evaluation	5.8	5.5	5.8	6.8	7.1	8.4	7.9	7.6	7.2	6.7	7.0	7.7	8.1
3: Short interval follow-up	2.0	2.8	3.3	3.6	3.8	3.8	3.6	3.4	3.1	3.0	3.3	3.3	3.2
4: Evaluation	7.4	7.4	8.1	9.0	9.0	9.0	8.7	8.8	9.1	8.8	7.5	7.9	7.8
5: Other	0.0	0.1	0.2	0.3	0.4	0.3	0.5	0.6	0.4	0.3	0.2	0.1	0.2

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 2008 at all remaining sites.

[Index of Tables]

Symptoms (self-reported)

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
0: No symptoms	86.8	88.8	89.1	88.3	88.6	88.6	89.2	89.7	90.1	90.0	90.7	91.0	91.1
1: Pain	1.3	0.9	0.5	0.7	1.2	2.1	2.3	2.1	2.3	2.5	2.5	2.4	2.3
2: Other	3.7	3.4	3.4	3.3	2.9	2.4	2.1	2.1	2.3	2.4	2.2	2.1	1.9
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	0.5
4: Lump	6.2	5.3	5.4	6.2	6.2	6.3	5.7	5.4	4.8	4.5	4.0	4.0	4.1
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	0.1

[Index of Tables]

Time since last mammogram

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
0: No previous mammogram	8.1	7.5	7.5	6.7	6.1	5.6	4.6	4.1	3.7	4.2	4.4	4.1	4.0
1: Within a year (0-11 months)	15.0	15.3	17.1	18.3	18.0	18.3	18.7	17.9	17.8	16.9	16.7	17.1	17.0
2: 1-2 years (12-35 months)	65.1	65.4	64.5	65.9	67.6	67.7	68.0	69.8	69.3	69.2	69.7	70.3	70.9
3: 3-4 years (36-59 months)	7.7	7.3	6.8	5.5	5.2	5.5	5.7	5.3	5.7	6.1	5.8	5.2	5.0
4: Five years or more (60+ months)	4.1	4.5	4.2	3.5	3.1	3.0	2.9	2.9	3.4	3.6	3.4	3.4	3.3

[Index of Tables]

Time since last clinical breast exam

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
0: None within the last 3 months / No other information	0.1	0.7	1.2	6.3	12.7	30.8	30.4	31.8	33.7	34.6	38.0	41.0	43.1
1: Within the last 3 months	23.4	11.5	2.9	7.8	14.2	46.5	49.3	47.9	48.6	47.2	45.3	43.7	43.0
2: 4 months to 1 year ago	10.9	5.2	0.8	0.7	.	6.8	10.6	10.5	8.7	8.6	7.2	6.6	5.9
3: More than 1 year ago	21.9	21.6	20.4	17.3	14.7	7.9	9.3	9.6	8.7	9.3	9.2	8.4	7.7
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	0.2
5: Within the last year	40.3	59.3	74.2	67.7	58.2	7.8	0.1	0.0	.	0.0	.	0.0	0.0

[Index of Tables]

Any mammogram performed

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
0: No	3.1	2.3	3.7	5.7	6.1	6.4	6.6	6.5	6.9	5.2	3.8	4.0	4.2
1: Yes	96.9	97.7	96.3	94.3	93.9	93.6	93.4	93.5	93.1	94.8	96.2	96.0	95.8

[Index of Tables]

Digital mammograms

	Exam year
	2000	2001	2002	2003	2004	2005	2006	2007	2008
1: Right breast only	16.7	3.7	4.6	5.3	5.7	5.4	4.6	5.0	5.7
2: Left breast only	16.7	3.5	4.9	5.1	5.6	5.7	4.9	5.2	5.9
3: Unilateral, side not specified	.	0.6	0.4	0.3	0.2	0.1	0.2	0.2	0.2
4: Bilateral (both breasts)	50.0	91.9	90.0	89.1	88.4	79.9	58.1	61.5	77.1
5: Yes, woman-level information only	16.7	0.3	0.2	0.2	0.1	8.8	32.3	28.1	11.1

[Index of Tables]

Ultrasounds

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
1: Right breast only	18.1	25.3	21.2	20.3	16.9	19.2	23.4	23.3	22.6	29.1	34.3	34.0	33.8
2: Left breast only	20.6	28.7	24.0	22.7	18.7	22.2	26.0	25.3	25.6	32.4	38.4	37.4	37.8
3: Unilateral, side not specified	.	.	.	.	1.0	4.0	12.7	13.8	13.7	13.3	.	0.0	0.0
4: Bilateral (both breasts)	39.8	22.4	20.3	23.2	26.9	12.8	8.0	7.7	9.5	12.5	15.0	14.5	14.8
5: Yes, woman-level information only	21.5	23.6	34.5	33.8	36.5	41.9	29.9	29.9	28.7	12.7	12.2	14.1	13.6

[Index of Tables]

Breast density

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
1: Almost entirely fat (<25% fibroglandular)	10.6	9.3	8.4	7.6	7.3	7.5	7.1	7.5	7.8	8.1	8.2	9.0	10.6
2: Scattered fibroglandular tissue (25% - 50%)	45.6	44.8	45.0	44.8	43.1	43.2	44.1	45.3	46.0	44.9	42.1	40.7	41.9
3: Heterogeneously dense (50% - 75%)	34.3	36.8	38.1	39.8	41.4	41.4	41.1	39.5	38.8	39.5	41.3	41.6	38.7
4: Extremely dense (>75%)	9.5	9.0	8.6	7.8	8.2	7.9	7.7	7.6	7.4	7.6	8.5	8.8	8.7

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 2008 at all remaining sites.

[Index of Tables]

Radiologists

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
	6.3	8.5	8.9	9.3	9.1	8.0	8.4	8.6	8.1	7.4	6.1	5.7	5.5

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 2008 at all remaining sites.

[Index of Tables]

Facilities where mammograms were taken

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
	10.7	11.2	9.8	8.8	8.3	8.0	7.7	7.7	7.5	6.6	4.8	4.5	4.5

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 2008 at all remaining sites.

[Index of Tables]

Facilities where mammograms were read

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
	8.3	9.0	9.0	8.7	8.9	8.5	8.3	8.6	8.1	7.4	5.4	4.8	4.7

[Index of Tables]

Age

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
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	0.1
25-29	0.4	0.3	0.4	0.4	0.4	0.4	0.4	0.4	0.3	0.3	0.3	0.3	0.3
30-34	1.3	1.1	1.2	1.2	1.2	1.3	1.2	1.1	1.0	0.8	0.8	0.7	0.7
35-39	5.6	5.0	5.4	5.3	5.2	5.0	4.5	4.1	3.7	3.3	3.3	3.1	2.9
40-44	14.1	14.4	14.8	14.7	14.6	14.4	14.2	13.8	13.6	13.0	12.9	12.2	12.0
45-49	15.8	15.8	15.9	15.9	15.9	15.8	15.7	15.5	15.5	14.9	14.8	14.5	14.7
50-54	15.1	16.0	16.2	16.1	16.4	16.8	16.4	16.2	16.1	15.8	15.7	15.5	15.5
55-59	11.8	12.0	11.9	12.0	12.2	12.5	13.5	14.0	14.3	14.7	15.1	14.9	14.8
60-64	10.0	9.8	9.4	9.4	9.4	9.6	9.9	10.2	10.6	11.0	11.2	12.2	12.7
65-69	9.3	9.0	8.5	8.3	8.1	8.0	8.0	8.2	8.3	8.8	8.8	9.1	9.5
70-74	7.9	7.7	7.4	7.3	7.1	6.9	6.8	6.8	6.7	7.0	6.8	6.9	7.0
75-79	5.2	5.2	5.2	5.4	5.3	5.2	5.2	5.3	5.2	5.4	5.4	5.4	5.3
80-84	2.5	2.5	2.5	2.6	2.7	2.8	2.8	3.0	3.0	3.2	3.3	3.3	3.1
85-89	0.8	0.9	0.9	1.0	1.0	1.0	1.0	1.1	1.1	1.2	1.3	1.3	1.2
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	0.3

[Index of Tables]

Race

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
1: White, non-Hispanic	78.3	78.1	78.1	78.4	78.3	77.2	76.4	76.3	75.3	74.8	76.6	75.9	74.5
2: Black, non-Hispanic	4.6	5.1	5.6	5.9	6.1	6.0	6.3	5.9	5.2	5.8	7.2	7.2	6.9
3: Asian	3.2	4.3	4.7	4.6	4.9	5.2	5.6	5.6	6.3	7.8	9.8	10.4	11.7
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	0.1
5: American Indian or Alaska Native	2.6	2.1	1.5	0.9	0.9	0.9	1.0	1.1	1.3	1.0	0.3	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	0.6
7: Mixed (2+ races)	0.2	0.3	0.4	0.4	0.5	0.6	0.7	0.7	0.9	1.1	1.3	1.3	1.4
8: Hispanic	10.6	9.6	9.2	9.2	8.9	9.5	9.4	9.9	10.5	8.9	4.1	4.2	4.5

[Index of Tables]

Body mass index

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
18.5 or less (Underweight)	2.0	1.9	1.9	1.8	1.8	1.8	1.7	1.7	1.8	1.8	1.9	1.9	2.0
18.5 - 24.9 (Normal)	47.9	47.3	47.3	47.6	46.6	46.6	45.5	45.4	46.8	46.8	45.6	45.8	46.1
25.0 - 29.9 (Overweight)	30.8	30.6	30.6	30.3	30.4	30.2	30.4	30.4	29.6	29.2	28.8	28.5	28.2
30.0 - 34.9 (Obese I)	12.9	13.3	13.2	13.2	13.7	13.7	14.1	14.2	13.8	13.6	14.1	13.9	13.9
35.0 - 39.9 (Obese II)	4.1	4.5	4.5	4.5	4.9	4.9	5.2	5.3	5.1	5.3	5.9	5.9	5.9
40 or greater (Obese III)	2.2	2.4	2.5	2.6	2.7	2.8	3.0	3.1	3.0	3.3	3.8	3.9	3.9

[Index of Tables]

Highest level of education completed

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
1: < High school graduate	9.8	9.8	10.1	10.3	10.0	9.5	9.1	8.8	8.6	8.5	7.8	7.5	7.3
2: High school graduate or GED	27.4	27.2	26.9	26.2	26.1	25.5	25.2	24.9	24.4	23.4	22.3	21.7	20.8
3: Some college/technical school	28.5	28.1	27.4	27.5	27.3	27.2	27.1	27.0	26.9	26.5	26.3	26.2	25.6
4: College or post-college graduate	34.2	34.9	35.6	35.9	36.6	37.8	38.6	39.3	40.1	41.6	43.6	44.5	46.3

[Index of Tables]

Menopause

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
1: Yes	74.9	72.8	72.2	71.8	71.5	70.6	70.4	71.2	72.2	70.8	69.7	70.1	69.4
0: No	25.1	27.2	27.8	28.2	28.5	29.4	29.6	28.8	27.8	29.2	30.3	29.9	30.6

[Index of Tables]

Current hormone therapy use

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
0: No	69.0	69.8	69.6	69.6	70.0	71.2	75.0	82.0	85.5	88.1	91.3	92.2	92.9
1: Yes	31.0	30.2	30.4	30.4	30.0	28.8	25.0	18.0	14.5	11.9	8.7	7.8	7.1

[Index of Tables]

Previous breast cancer

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
0: No	89.7	88.4	86.9	86.1	85.5	89.7	91.8	91.9	91.9	92.3	92.3	92.2	92.2
1: Yes	10.3	11.6	13.1	13.9	14.5	10.3	8.2	8.1	8.1	7.7	7.7	7.8	7.8

[Index of Tables]

Family history of breast cancer

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
0: No	85.2	85.0	84.8	83.5	81.7	85.7	85.4	84.7	84.2	84.0	83.8	83.5	83.2
1: Yes	14.8	15.0	15.2	16.5	18.3	14.3	14.6	15.3	15.8	16.0	16.2	16.5	16.8

[Index of Tables]

Ever given birth

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
0: No	17.8	17.2	17.9	18.5	19.7	18.2	18.0	18.0	18.3	19.1	21.2	22.4	24.1
1: Yes	82.2	82.8	82.1	81.5	80.3	81.8	82.0	82.0	81.7	80.9	78.8	77.6	75.9

[Index of Tables]

Age at first birth

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
Nulliparous	18.2	17.6	18.2	18.8	19.9	18.4	18.2	18.8	19.1	19.9	21.2	21.5	22.2
< 20	10.8	12.5	13.8	14.4	14.4	14.0	13.9	13.4	13.2	13.2	12.7	12.4	11.9
20-24	20.0	22.6	23.5	24.0	23.8	22.6	21.9	21.3	20.4	20.9	20.9	20.0	18.8
25-29	10.7	12.3	12.7	13.4	13.3	12.5	12.2	12.0	11.6	12.4	13.2	13.0	12.4
30-34	4.1	4.9	5.1	5.3	5.4	4.9	5.0	5.0	4.9	5.3	5.7	5.8	5.7
35-39	1.5	1.6	1.7	1.8	1.8	1.7	1.7	1.7	1.7	1.9	2.1	2.1	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	1.6
Age only reported as <30	29.4	23.7	20.0	17.5	16.2	20.3	21.0	21.5	22.2	18.8	14.6	14.9	15.4
Age only reported as >=30	5.0	4.4	4.3	4.1	4.4	4.9	5.3	5.3	5.9	6.6	8.4	8.9	9.6

[Index of Tables]

Age at menarche

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
No menarche	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.1	0.0	0.1	0.1	0.1
Age only reported as <=10	1.4	2.7	2.9	2.8	2.7	1.6	1.0	1.1	1.2	1.1	1.2	2.1	2.1
<=12	41.6	41.9	42.0	42.1	42.2	42.0	41.9	41.9	41.7	41.9	41.6	40.6	40.5
15+	11.5	11.1	11.0	10.9	10.9	11.3	11.3	11.3	11.2	11.6	11.5	11.8	12.1
13	31.5	30.8	30.5	30.6	30.8	31.5	32.1	32.2	32.3	31.9	32.1	31.9	31.8
14	13.9	13.5	13.5	13.6	13.4	13.5	13.6	13.5	13.5	13.5	13.5	13.5	13.6

[Index of Tables]

Covered by Medicare

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
0: No	83.7	79.1	81.2	81.7	81.6	80.6	79.8	78.7	79.1	76.5	75.7	75.2	76.0
1: Yes	16.3	20.9	18.8	18.3	18.4	19.4	20.2	21.3	20.9	23.5	24.3	24.8	24.0

[Index of Tables]

Covered by Medicaid

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
0: No	97.7	96.4	96.4	96.3	96.9	97.3	96.8	96.7	96.9	96.3	96.2	96.3	96.3
1: Yes	2.3	3.6	3.6	3.7	3.1	2.7	3.2	3.3	3.1	3.7	3.8	3.7	3.7

[Index of Tables]

Covered by private insurance

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
0: No	20.5	34.4	38.9	44.4	45.1	67.4	62.8	62.3	59.8	60.6	65.2	65.8	65.9
1: Yes	79.5	65.6	61.1	55.6	54.9	32.6	37.2	37.7	40.2	39.4	34.8	34.2	34.1

[Index of Tables]

Covered by managed care insurance

	Exam year
	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
0: No	27.7	41.8	46.1	46.9	45.1	42.5	40.2	44.4	46.8	37.3	29.5	27.5	23.4
1: Yes	72.3	58.2	53.9	53.1	54.9	57.5	59.8	55.6	53.2	62.7	70.5	72.5	76.6

[Index of Tables]

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