Published in:
01-01-2008 | Erratum
Unequal risks for breast cancer associated with different hormone replacement therapies: results from the E3N cohort study
Published in: Breast Cancer Research and Treatment | Issue 2/2008
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Unfortunately a Table with errors was published in the article. Please find here the corrected data.
Table 1
Selected baseline characteristics of participants overall and according to whether or not they had used HRT as recorded at the end of follow-up
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All (n = 80,377) n (%) or mean (SD)
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HRT never-users (n = 23,703) n (%) or mean (SD)
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HRT ever-users (n = 56,674) n (%) or mean (SD)
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|
|---|---|---|---|
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Year of birth
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|||
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[1925–1930]
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6,617 (8.2%)
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4,003 (16.9%)
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2,614 (4.6%)
|
|
[1930–1935]
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11,066 (13.8%)
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4,601 (19.4%)
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6,465 (11.4%)
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|
[1935–1940]
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16,377 (20.4%)
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4,052 (17.1%)
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12,325 (21.7%)
|
|
[1940–1945]
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20,673 (25.7%)
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3,960 (16.7%)
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16,713 (29.5%)
|
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≥1945
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25,644 (31.9%)
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7,087 (29.9%)
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18,557 (32.7%)
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Age at start of follow-up, years
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53.1 (4.5)
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55.0 (4.8)
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52.3 (4.1)
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Age at menarche, years
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|||
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<13
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37,498 (46.7%)
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11,116 (46.9%)
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26,382 (46.6%)
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≥13
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42,879 (53.3%)
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12,587 (53.1%)
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30,292 (53.4%)
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Parity
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|||
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Nulliparous
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9,747 (12.1%)
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3,400 (14.3%)
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6,347 (11.2%)
|
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Parous, first child before 30, 1 or 2 children
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39,892 (49.6%)
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10,615 (44.8%)
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29,277 (51.7%)
|
|
Parous, first child before 30, 3+ children
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22,594 (28.1%)
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7,071 (29.8%)
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15,523 (27.4%)
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Parous, first child after 30
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8,144 (10.1%)
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2,617 (11.0%)
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5,527 (9.8%)
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Breastfeeding, monthsa
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|||
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Never
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20,682 (29.3%)
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5,711 (28.1%)
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14,971 (29.7%)
|
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<12
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38,539 (54.6%)
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10,178 (50.1%)
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28,361 (56.4%)
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≥12
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3,906 (5.5%)
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1,549 (7.6%)
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2,357 (4.7%)
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Unknown
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7,503 (10.6%)
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2,865 (14.1%)
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4,638 (9.2%)
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Age at menopause, years
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50.2 (3.7)
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50.7 (3.9)
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50.1 (3.6)
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Type of menopause
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|||
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Artificial
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6,611 (8.2%)
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1,831 (7.7%)
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4,780 (8.4%)
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Natural/Unknown
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73,766 (91.8%)
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21,872 (92.3%)
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51,894 (91.6%)
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Personal history of benign breast disease
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|||
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Yes
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21,259 (26.4%)
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5,561 (23.5%)
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15,698 (27.7%)
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No
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59,118 (73.6%)
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18,142 (76.5%)
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40,976 (72.3%)
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Family history of breast cancer in first degree relatives
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|||
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Yes
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9,256 (11.5%)
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2,970 (12.5%)
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6,286 (11.1%)
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No
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71,121 (88.5%)
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20,733 (87.5%)
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50,388 (88.9%)
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Body mass index, kg/m2
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|||
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≤20
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11,231 (13.4%)
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2,697 (11.4%)
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8,534 (15.1%)
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[20–25]
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50,912 (63.3%)
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13,382 (56.5%)
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37,530 (66.2%)
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[25–30]
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14,649 (18.2%)
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5,730 (24.2%)
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8,919 (15.7%)
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>30
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3,585 (4.5%)
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1,894 (8.0%)
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1,691 (3.0%)
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Total physical activity, MET-h/wkb
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|||
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<34
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19,536 (24.3%)
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5,984 (25.2%)
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13,552 (23.9%)
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[34–47]
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20,935 (26.1%)
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5,868 (24.8%)
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15,067 (26.6%)
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[47–62]
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19,957 (24.8%)
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5,818 (24.5%)
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14,139 (24.9%)
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≥62
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19,949 (24.8%)
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6,033 (25.5%)
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13,916 (24.6%)
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