| n (%) | Odds ratio (95% CI) | |||
| Total* (n = 4994) | Men (n = 2472) | Women (n = 2522) | ||
| During follow-up always employed as: | ||||
| Office worker (ref) | 2843 (56.9) | 1 | 1 | 1 |
| During follow-up ever employed as:† | ||||
| Cleaners and caretakers | 294 (5.9) | 1.25 (0.86 to 1.81) | 1.22 (0.59 to 2.55) | 1.26 (0.81 to 1.95) |
| Hairdressers, barber, beautician and related | 35 (0.7) | 0.44 (0.10 to 1.85) | NA | 0.51 (0.12 to 2.19) |
| Nurses | 199 (4.0) | 0.85 (0.54 to 1.34) | 0.75 (0.17 to 3.27) | 0.85 (0.52 to 1.37) |
| Other medical and pharmacy professions | 260 (5.2) | 0.88 (0.60 to 1.32) | 2.96 (1.37 to 6.38) | 0.64 (0.40 to 1.03) |
| Agriculture and forestry workers | 109 (2.2) | 1.38 (0.79 to 2.41) | 1.58 (0.78 to 3.19) | 1.11 (0.42 to 2.96) |
| Wood workers | 72 (1.4) | 0.79 (0.33 to 1.87) | 0.70 (0.27 to 1.82) | 7.27 (0.44 to 121) |
| Bakery workers | 30 (0.6) | 1.23 (0.42 to 3.61) | 1.51 (0.33 to 6.98) | 1.03 (0.23 to 4.72) |
| Food and tobacco processors | 112 (2.2) | 0.93 (0.49 to 1.78) | 1.50 (0.65 to 3.48) | 0.55 (0.19 to 1.56) |
| Metal making and treating | 48 (1.0) | 0.86 (0.31 to 2.51) | 0.92 (0.31 to 2.68) | NA |
| Other metal workers | 205 (4.1) | 0.32 (0.15 to 0.70) | 0.31 (0.13 to 0.73) | 0.46 (0.06 to 3.58) |
| Electrical processors | 128 (2.6) | 1.22 (0.69 to 2.16) | 1.12 (0.59 to 2.13) | 2.73 (0.71 to 10.5) |
| Textile, leather and fur | 50 (1.0) | 1.77 (0.83 to 3.74) | 0.76 (0.10 to 6.03) | 2.12 (0.93 to 4.87) |
| Printing workers | 43 (0.9) | 1.17 (0.45 to 3.06) | 1.87 (0.68 to 5.13) | NA |
| Construction and mining | 188 (3.8) | 0.96 (0.57 to 1.64) | 0.96 (0.55 to 1.68) | NA |
| Drivers | 175 (3.5) | 1.06 (0.62 to 1.80) | 1.07 (0.61 to 1.88) | 0.96 (0.11 to 8.81) |
| Others‡ | 382 (7.6) | – | – | – |
NA, not applicable due to small numbers.
Odds ratio with 95% CI adjusted for country, age at first survey, smoking, parental allergies and level of education.
*OR (95% CI) additionally adjusted for gender.
†Subjects might have held more than one job, therefore, numbers do not add up to 100%.
‡Others: occupational groups with fewer than 30 subjects (chemical technicians, plastic and rubber workers, chemical processors, welders and flame cutters, spray painters, paper, glass and ceramic workers) and groups with mixed exposures (remainder transport and storage, remainder blue collar, not classifiable). Odds ratios not calculated due to mixture of different exposures.