| Wood dust exposure | Cases,n (%) | Controls,n (%) | Adjusted OR,OR (95% CI) | p Trend |
| All upper aero-digestive cancers* (cases = 1522 and controls = 1522) | ||||
| Never exposed | 1085 (71.3) | 1153 (75.8) | Ref | |
| Occasionally exposed | 281 (18.5) | 262 (17.2) | 1.09 (0.89 to 1.34) | 0.05 |
| Regularly exposed | 156 (10.2) | 107 (7.0) | 1.32 (1.01 to 1.77) | |
| Oral and oropharyngeal cancers† (cases = 241 and controls = 1522) | ||||
| Never exposed | 188 (78.0) | 1153 (75.8) | Ref | |
| Occasionally exposed | 32 (13.3) | 262 (17.2) | 0.72 (0.48 to 1.08) | 0.69 |
| Regularly exposed | 21 (8.7) | 107 (7.0) | 1.14 (0.68 to 1.92) | |
| Nasal cavity and nasopharyngeal and hypopharyngeal cancers‡ (cases = 90 and controls = 1522) | ||||
| Never exposed | 60 (66.7) | 1153 (75.8) | Ref | |
| Occasionally exposed | 21 (23.3) | 262 (17.2) | 1.45 (0.85 to 2.48) | 0.11 |
| Regularly exposed | 9 (10.0) | 107 (7.0) | 1.57 (0.75 to 3.29) | |
| Laryngeal cancers§ (cases = 124 and controls = 1522) | ||||
| Never exposed | 86 (69.4) | 1153 (75.8) | Ref | |
| Occasionally exposed | 21 (16.9) | 262 (17.2) | 0.75 (0.42 to 1.36) | 0.52 |
| Regularly exposed | 17 (13.7) | 107 (7.0) | 1.52 (0.79 to 2.86) | |
| Lung and tracheal cancers¶ (cases = 809 and controls = 1522) | ||||
| Never exposed | 557 (68.9) | 1153 (75.8) | Ref | |
| Occasionally exposed | 158 (19.5) | 262 (17.2) | 1.09 (0.84 to 1.43) | 0.007 |
| Regularly exposed | 94 (11.6) | 107 (7.0) | 1.69 (1.20 to 2.36) | |
| Oesophageal and gastric cardia cancers** (cases = 258 and controls = 1522) | ||||
| Never exposed | 194 (75.2) | 1153 (75.8) | Ref | |
| Occasionally exposed | 49 (19.0) | 262 (17.2) | 1.23 (0.85 to 1.79) | 0.72 |
| Regularly exposed | 15 (5.8) | 107 (7.0) | 0.64 (0.32 to 1.29) | |
OR, odds ratio.
*Adjusted for age, education, pack years of smoking, body mass index, family income and year of enrolment.
†Adjusted for age, pack years of smoking, body mass index, smoking status, education, alcoholic drinks per week and year of enrolment.
‡Adjusted for age, education, pack years of smoking and year of enrolment.
§Adjusted for age, education, pack years of smoking, smoking status and year of enrolment.
¶Adjusted for age, education, pack years of smoking, body mass index, asbestos, smoking status, family income and year of enrolment.
**Adjusted for age, pack years of smoking, body mass index, alcoholic drinks per week, regular aspirin intake and year of enrolment.