Table 1 Characteristics of the study population at baseline, and details of follow-up, according to alcohol intake
| Â | Alcohol intake (drinks/week) | |||
|---|---|---|---|---|
1–2 | 3–6 | 7–14 |  ≥ 15 | |
No. of women, n | 292,249 | 209,275 | 230,749 | 62,848 |
Alcohol intake mean drinks/week (SD)a | 2.6 (3.0) | 5.5 (4.1) | 10.0 (5.6) | 17.0 (8.6) |
Age, mean (SD) | 56.7 (4.8) | 56.3 (4.8) | 56.1 (4.7) | 55.8 (4.6) |
Most deprived quintile, % (n) | 17 (49,191) | 17 (34,716) | 16 (36,832) | 16 (9,788) |
No educational qualifications, % (n) | 41 (117,865) | 37 (76,584) | 33 (74,749) | 28 (17,625) |
Current smoker, % (n) | 16 (46,810) | 18 (38,445) | 22 (51,638) | 26 (16,402) |
Body mass index (kg/m2), mean (SD) | 26.3 (4.6) | 25.8 (4.2) | 25.4 (4.0) | 25.4 (4.1) |
Current use menopausal hormones, % (n) | 33 (96,504) | 36 (74,486) | 38 (87,214) | 39 (24,432) |
Ever use oral contraceptives, % (n) | 59 (172,254) | 64 (133,527) | 69 (157,458) | 73 (45,732) |
Strenuous exercise > once per week, % (n) | 20 (56,481) | 23 (45,930) | 25 (56,672) | 28 (16,926) |
Follow-up | ||||
Person-years | 4,992,142 | 3,552,867 | 3,873,456 | 1,030,747 |
Years of follow-up per woman | 17.1 | 17.0 | 16.8 | 16.4 |
No. of cancers | 50,555 | 36,139 | 41,325 | 12,184 |