Table 2 Prevalence of potential risk factors and confounding factors.
| Men | Women | Total | ||||
|---|---|---|---|---|---|---|
| Reported alcohol intake in previous week (mean (SD) and range) | ||||||
| All drinks | 12.8 (16.6) | 0 to 189 | 2.9 (4.7) | 0 to 44 | 7.5 (12.8) | 0 to 189 |
| Beer | 6.5 (10.7) | 0 to 56 | 0.2 (1.3) | 0 to 13 | 3.1 (8.0) | 0 to 56 |
| Wine | 1.0 (4.5) | 0 to 72 | 0.6 (1.6) | 0 to 10 | 0.8 (3.3) | 0 to 72 |
| Spirits | 5.2 (12.6) | 0 to 189 | 1.8 (4.1) | 0 to 44 | 3.4 (9.3) | 0 to 189 |
| Smoking behaviour (n and % (95% CI) | ||||||
| Current smoker | 172 | 43.1% (38.2 to 48.1) | 162 | 35.3% (30.9 to 39.9) | 334 | 38.9% (35.6 to 42.3) |
| Body mass index (mean (SD) and range) | ||||||
| BMI (kg/m2) | 26.0 (3.4) | 17.8 to 40.3 | 26.3 (4.9) | 13.1 to 48.1 | 26.2 (4.3) | 13.1 to 48.1 |
| Obese (BMI>30 kg/m2)* | 46 | 11.5% (8.6 to 15.1) | 87 | 19.0% (15.5 to 22.8) | 133 | 15.5% (13.1 to 18.1) |
| Intermediaries and potential confounders (n and % (95% CI)) | ||||||
| Manual social class | 253 | 63.4% (58.5 to 68.1) | 244 | 53.2% (48.5 to 57.8) | 497 | 57.9% (54.5 to 61.3) |
| Occupation, vibrations | 170 | 42.7% (37.8 to 47.7) | 88 | 19.5% (16.0 to 23.5) | 258 | 30.4% (27.3 to 33.6) |
| Occupation, bending | 180 | 45.2% (40.3 to 50.3) | 89 | 19.7% (16.1 to 23.7) | 269 | 31.7% (28.5 to 34.9) |
| Occupation, arduous | 227 | 57.0% (52.0 to 62.0) | 151 | 33.4% (29.1 to 38.0) | 378 | 44.5% (41.1 to 47.9) |
*Values are n and % (95% CI).
CI, confidence interval.