Table 3 Selected characteristics of the study sample by total coffee consumption at baseline, the Norwegian Women and Cancer Study, 1996–2013 - complete case analyses
Characteristics | Total coffee consumption | |||
|---|---|---|---|---|
Light consumers | Low-moderate consumers | High-moderate consumers | Heavy consumers | |
≤1 cup/day | >1–3 cups/day | >3–5 cups/day | >5 cups/day | |
Age at baseline (y), mean (SD) | 47.8 (8.6) | 49.0 (8.7) | 47.4 (8.2) | 46.3 (7.8) |
Age at study exit (y), mean (SD) | 63.4 (6.8) | 64.6 (7.3) | 64.1 (6.9) | 63.5 (6.5) |
Smoking status, % | ||||
Never | 50.8 | 42.4 | 31.6 | 17.1 |
Former | 31.5 | 35.9 | 33.2 | 26.6 |
Current | 17.7 | 21.7 | 35.2 | 56.3 |
Duration of education (y), mean (SD) | 13.1 (3.6) | 12.5 (3.5) | 11.9 (3.3) | 11.1 (3.1) |
Body mass index, mean (SD) | 24.0 (4.2) | 24.0 (3.8) | 23.9 (3.7) | 24.0 (3.9) |
Physical activity level, mean (SD) | 5.5 (1.9) | 5.7 (1.8) | 5.7 (1.9) | 5.5 (2.0) |
Alcohol consumption (g/day), mean (SD) | 3.0 (5.5) | 3.4 (4.9) | 3.3 (4.6) | 3.2 (6.9) |
Average number of sunburns per year, mean (SD) | 0.9 (0.7) | 0.8 (0.7) | 0.8 (0.7) | 0.8 (0.7) |
Original hair color, % | ||||
Dark | 17.7 | 17.1 | 17.1 | 17.6 |
Brown | 38.9 | 39.6 | 40.0 | 40.0 |
Blond | 40.5 | 40.2 | 40.0 | 39.4 |
Ginger | 2.9 | 3.1 | 2.8 | 3.0 |
Number of moles larger than 5 mm, % | ||||
0 | 88.3 | 88.7 | 88.6 | 88.8 |
1 | 6.9 | 6.5 | 6.7 | 6.6 |
2–3 | 3.3 | 3.3 | 3.3 | 3.0 |
4–6 | 0.9 | 0.8 | 0.9 | 0.9 |
7–12 | 0.3 | 0.3 | 0.3 | 0.5 |
13–24 | 0.1 | 0.1 | 0.2 | 0.1 |
≥25 | 0.1 | 0.1 | 0.1 | 0.1 |
Area of residence, % | ||||
Oslo area | 14.7 | 10.2 | 7.2 | 5.3 |
Eastern Norway | 39.9 | 36.2 | 34.8 | 30.7 |
Southern Norway | 5.0 | 4.6 | 4.7 | 4.7 |
Western Norway | 20.1 | 23.2 | 22.3 | 19.3 |
Middle Norway | 6.7 | 7.7 | 8.2 | 9.0 |
Northern Norway | 13.7 | 18.1 | 22.8 | 30.9 |