Table 3 Variations in the definitions of alcohol exposures
From: Modifiable risk factors in women at high risk of breast cancer: a systematic review
Total | Nonuser vs. 1-29y vs. > 29y | Never vs. ≤ 780 vs. 781–1404 vs. 1405–2366 vs. > 2366 cups |  |  |
Age at first use |  < 17yo |  > 20yo | Prior to vs. after first full-term birth | Mean age |
Current alcohol/day | Nonusers vs. 1–4 vs. > 4 g/day |  < 1.7 vs. ≤ 7.9 and > 1.7 vs. > 7.9 g/day |  |  |
Past alcohol/day | More than 1 cl glass/day | 1–5 vs. 6–10 vs. > 10 glasses/week |  |  |
Alcohol type | Wine-exclusive | Wine, spirits, beer | Â | Â |