Table 1.
Distribution of cases of oral cavity, oropharyngeal, hypopharyngeal and laryngeal cancers, and controls according to intensity and duration of alcohol drinking in current drinkers.
| Controls | Oral cavity | Oropharynx | Hypopharynx | Larynx | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| n | (%) | n | (%) | n | (%) | n | (%) | n | (%) | |
| Total | 24,234 | 4085 | 3359 | 983 | 3340 | |||||
| Never drinkers | 7873 | (32.5) | 1353 | (33.1) | 583 | (17.4) | 87 | (8.9) | 593 | (17.8) |
| Drinking intensity (drinks/day) | ||||||||||
| ≤1 | 6921 | (28.6) | 757 | (18.5) | 801 | (23.8) | 105 | (10.7) | 583 | (17.5) |
| >1–3 | 5470 | (22.6) | 805 | (19.7) | 787 | (23.4) | 242 | (24.6) | 771 | (23.1) |
| >3–10 | 3970 | (16.4) | 1170 | (28.6) | 1188 | (35.4) | 549 | (55.8) | 1393 | (41.7) |
| Drinking duration (years) | ||||||||||
| 1–30 | 6218 | (25.7) | 975 | (23.9) | 889 | (26.5) | 217 | (22.1) | 647 | (19.4) |
| 31–40 | 5061 | (20.9) | 920 | (22.5) | 1049 | (31.2) | 337 | (34.3) | 986 | (29.5) |
| 41–54 | 5082 | (21.0) | 837 | (20.5) | 838 | (24.9) | 342 | (34.8) | 1114 | (33.4) |
| Age at start drinking (years) | ||||||||||
| ≤18 | 5482 | (22.6) | 1047 | (25.6) | 1172 | (34.9) | 324 | (33.0) | 1050 | (31.4) |
| 19–25 | 7016 | (29.0) | 1110 | (27.2) | 1126 | (33.5) | 423 | (43.0) | 1209 | (36.2) |
| 26–35 | 2435 | (10.0) | 332 | (8.1) | 328 | (9.8) | 106 | (10.8) | 331 | (9.9) |
| >35 | 1428 | (5.9) | 243 | (5.9) | 150 | (4.5) | 43 | (4.4) | 157 | (4.7) |