Sex | | | <0.05 |
Male | 10 | 17 | |
Female | 4 | 0 | |
Age (mean (SD)) | 59.8 (10.3) | 65.1 (8.6) | NS |
Primary tumour site of HNC | | | |
Tongue | 5 | 3 | |
Pharynx/larynx | 6 | 9 | NS |
Other oral cavity | 3 | 4 | NS |
Drinking habits | | | NS |
Non-drinkers | 2 | 2 | |
Drinkers | 15 | 12 | |
Most often consumed drink | | | |
Beer | 3 | 2 | |
Sake (a typical Japanese liquor) | 7 | 7 | NS |
Whisky | 2 | 5 | NS |
Daily alcohol intake (g) (mean (SD)) | 60.3 (54) | 68.0 (51) | |
Smoking habits | | | <0.05 |
Non-smokers | 4 | 0 | |
Smokers | 10 | 17 | |
Brinkman index | | | |
0 | 4 | 0 | |
0 to ⩽400 | 0 | 2 | NS |
400< | 10 | 15 | NS |
Family history of cancer | | | NS |
Present | 5 | 9 | |
Absent | 9 | 8 | |
Second primary oesophageal cancer | | | <0.0001 |
Present | 1 | 14 | |
Absent | 13 | 3 | |