|
Percentage distributions or means (standard deviation, SD) of cases with breast cancer and their controls by study characteristics in the HSHS cohort |
||
| Study characteristic |
Percentage or mean |
|
| Cases n = 150 |
Controls n = 316 |
|
|
|
||
| Year of birth, % |
||
| 1946–1950 |
48 |
47 |
| 1951–1955 |
29 |
30 |
| 1956–1960 |
23 |
24 |
| First visit at the HSHS, % |
||
| 1965–1969 |
19 |
14 |
| 1970–1974 |
39 |
41 |
| 1975–1995 |
43 |
45 |
| Smoking, % |
||
| Current |
23 |
29 |
| Quitted |
3 |
6 |
| Never |
58 |
55 |
| No information |
16 |
10 |
| Alcohol use, % |
||
| Moderate or heavy |
17 |
18 |
| Slight |
37 |
38 |
| No |
9 |
15 |
| No information |
37 |
29 |
| Sports, % |
||
| Active |
21 |
35 |
| No |
53 |
44 |
| No information |
26 |
21 |
| Weight (kg), mean (SD) |
57.0 (7.1) |
56.2 (7.6) |
| Height (cm), mean (SD) |
166 (5.2) |
165 (5.6) |
| Age at menarche (in years), mean (SD) |
12.8 (1.2) |
12.7 (1.2) |
| Contraception *, % |
94 |
88 |
| Any births ‡, % |
73 |
67 |
| Age at first delivery § (in years), % |
||
| 18–24 |
17 |
20 |
| 25–29 |
48 |
49 |
| 30–34 |
29 |
26 |
| 35–41 |
5 |
5 |
| Mean (SD) |
28.1 (3.7) |
27.7 (4.1) |
|
*Any method recorded by the HSHS at any time. ‡ Births in Central Population Register before year of case's diagnosis. §Delivery before year of case's diagnosis. | ||
Hemminki et al. BMC Women's Health 2002 2:9 doi:10.1186/1472-6874-2-9 |
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