Table 1.
Distribution of participants according to total, filtered, instant, and boiled coffee consumption, the Norwegian Women and Cancer Study, 1991–2013 - complete case analyses
| 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 | |
| Baseline, N (%) | 16,853 (16.2) | 29,923 (28.7) | 34,451 (33.1) | 22,853 (22.0) |
| Follow-up, N (%) | 13,712 (19.4) | 25,113 (35.5) | 21,154 (29.9) | 10,717 (15.2) |
| Filtered coffee consumption | ||||
| ≤1 cup/day | >1–3 cups/day | >3–5 cups/day | >5 cups/day | |
| Baseline, N (%) | 41,942 (40.3) | 26,708 (25.7) | 23,014 (22.1) | 12,416 (11.9) |
| Follow-up, N (%) | 24,450 (38.3) | 19,868 (31.2) | 13,257 (20.8) | 6179 (9.7) |
| Instant coffee consumption | ||||
| ≤1 cup/day | >1–3 cups/day | >3–5 cups/day | >5 cups/day | |
| Baseline, N (%) | 95,584 (91.8) | 5563 (5.3) | 2070 (2.0) | 863 (0.8) |
| Follow-up, N (%) | 58,108 (91.1) | 3941 (6.2) | 1212 (1.9) | 493 (0.8) |
| Boiled coffee consumption | ||||
| ≤1 cup/day | >1–3 cups/day | >3–5 cups/day | >5 cups/day | |
| Baseline, N (%) | 83,094 (79.8) | 8283 (8.0) | 7474 (7.8) | 5229 (5.0) |
| Follow-up, N (%) | 56,441 (88.5) | 3671 (5.8) | 2258 (3.5) | 1384 (2.2) |