Table 1 Baseline characteristics of the Swedish Women’s Lifestyle and Health study participants according to alcohol intake
Alcohol intake (g/day) | ||||
|---|---|---|---|---|
0 | 0.1–5 | 5.1–15 | >15 | |
No. of participans | 10,153 | 22,249 | 11,734 | 1,097 |
Age at enrollment (mean) | 39.8 | 39.7 | 40.5 | 41.4 |
Educational attainment >11 years, (%) | 46.3 | 56.3 | 61.4 | 61.7 |
History of breast cancer in mother and/or sister (%) | 4.2 | 4.2 | 5.3 | 5.9 |
Smoking habits (%) | ||||
Never | 50.5 | 43.0 | 32.0 | 18.1 |
Former | 28.2 | 35.3 | 40.7 | 40.7 |
Current | 21.3 | 21.7 | 27.3 | 41.2 |
Age at menarche (mean) | 12.9 | 13.0 | 13.0 | 13.1 |
Women with more than 3 children (%) | 32.5 | 27.2 | 24.0 | 23.4 |
Age at first child birth among parous women (mean) | 23.5 | 24.0 | 24.1 | 23.8 |
Total duration of breast feeding (months) | 30.9 | 30.8 | 30.2 | 30.3 |
Ever oral contraceptive use (%) | 75.1 | 85.0 | 88.2 | 89.7 |
Post-menopause (%) | 4.4 | 3.8 | 4.3 | 3.7 |
Body mass index (>25 kg/m2, %) | 31.9 | 24.1 | 21.1 | 24.6 |