Table 3 |
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Prevalence of breast cancer risk factors in non-Hispanic white women 35 to 74 years of age |
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Patient characteristics |
Population-based control series (1989–1999) |
California Health Interview Survey |
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SFBA (n = 1,168) |
2001 |
2003 |
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SFBA |
Californiaa |
SFBA |
Californiaa |
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Education |
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Some high school or less |
3.2 (2.2–4.2) |
2.3 (1.2–3.3) |
7.5 (6.7–8.3) |
2.9 (1.5–4.4) |
6.2 (5.4–7.0) |
|
High school graduate |
20.7 (17.9–23.4) |
18.1 (16.0–20.2) |
23.3 (22.4–24.3) |
15.4 (13.3–17.5) |
23.8 (22.6–25.0) |
|
Some college |
27.7 (24.5–30.9) |
27.0 (24.6–29.3) |
34.4 (33.3–35.5) |
25.1 (22.6–27.7) |
34.3 (33.1–35.6) |
|
College graduate or higher |
46.7 (42.5–50.9) |
52.7 (50.0–55.3) |
34.8 (33.7–35.9) |
56.5 (53.6–59.4) |
35.6 (34.3–36.9) |
|
Missing |
1.6 |
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Body mass index <25 in women <50 years |
64.4 (56.6–72.1) |
64.1 (60.4–67.7) |
58.0 (56.2–59.7) |
63.9 (59.7–68.1) |
57.2 (55.1–59.3) |
|
Body mass index ≥ 30 in women ≥ 50 years |
20.9 (17.5–24.2) |
21.7 (18.5–24.8) |
21.5 (20.2–22.9) |
21.1 (17.7–24.5) |
22.9 (21.4–24.4) |
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History of breast cancer in mother, sister, or daughter |
13.9 (11.6–16.1) |
b |
b |
b |
b |
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Ever had a breast biopsy that was not cancer |
11.7 (9.8–13.5) |
b |
b |
b |
b |
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Ever had radiation treatment to the chest |
2.0 (1.2–2.7) |
b |
b |
b |
b |
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No vigorous/moderate physical activity in past 30 days |
b |
19.8 (17.7–22.0) |
23.4 (22.4–24.4) |
b |
b |
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Drank alcohol in past month |
b |
71.3 (68.9–73.8) |
61.3 (60.1–62.4) |
69.8 (67.0–72.7) |
61.0 (59.7–62.3) |
|
2+ drinks per dayc |
27.6 |
23.6 |
28.0 |
25.9 |
|
|
Age at menarche <12 years |
21.0 (18.2–23.8) |
18.5 (16.4–20.6) |
19.4 (18.5–20.4) |
b |
b |
|
Age at first live birth ≥ 30 years |
20.7 (17.8–23.7) |
20.4 (18.3–22.5) |
13.4 (12.6–14.2) |
b |
b |
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Number of live births |
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0 |
25.0 (21.9–28.1) |
25.3 (23.2–27.4) |
17.3 (16.5–18.2) |
b |
b |
|
1–2 |
48.2 (43.9–52.6) |
51.4 (48.7–54.0) |
48.0 (46.8–49.2) |
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≥3 |
26.7 (23.8–29.7) |
23.3 (21.0–25.6) |
34.7 (33.6–35.8) |
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Hormone therapy use |
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Never |
53.7 (48.8–58.5) |
b |
b |
b |
b |
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<5 years |
21.2 (18.6–23.8) |
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≥5 years |
22.8 (20.3–25.3) |
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Missing |
2.3 |
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Ever took hormone supplements for menopause symptoms |
b |
b |
b |
29.8 (26.7–33.0) |
34.5 (32.9–36.0) |
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Currently takes hormone supplements for menopause symptoms |
b |
34.9 (32.1–37.7) |
37.0 (35.8–38.2) |
16.7 (14.2–19.1) |
21.6 (20.4–22.7) |
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Among women without a hysterectomyd |
20.4 |
18.7 |
4.9 |
5.2 |
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Mammogram screening history |
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2 years or less |
b |
72.9 (70.5–75.2) |
70.4 (69.3–71.5) |
71.0 (68.3–73.7) |
71.6 (70.3–72.8) |
|
More than 2 years ago |
12.1 (10.4–13.8) |
13.7 (12.9–14.5) |
12.9 (10.9–14.9) |
13.4 (12.5–14.3) |
|
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Never had a mammogram |
15.1 (13.1–17.0) |
15.9 (15.0–16.8) |
16.1 (13.8–18.3) |
15.0 (14.0–16.1) |
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aExcluding the SFBA. bNot available in the population-based control series or AskCHIS. cCalculated by dividing the number of women drinking 2+ drinks per day in the past 30 days by the total number of women (that is, the number of women who did and did not drink alcohol in the past 30 days). dCalculated by dividing the number of women who did not have a hysterectomy and reported using hormone supplements by the total number of women (that is, the number of women who did and did not take hormone supplements for menopause symptoms). SFBA, San Francisco Bay area. |
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Keegan et al. Breast Cancer Research 2007 9:R62 doi:10.1186/bcr1768 |
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