Occupational exposures | N (31 368) | Chronic cough | N (31 704) | Chronic phlegm | N (28 890) | Chronic bronchitis | N (11 341) | Airway obstruction |
OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | |||||
Biological dust | ||||||||
No | 20 630 | Ref. | 20 845 | Ref. | 18 987 | Ref. | 7572 | Ref. |
Low | 9191 | 0.95 (0.85 to 1.06) | 9317 | 0.93 (0.82 to 1.05) | 8524 | 0.96 (0.80 to 1.15) | 3226 | 1.17 (0.95 to 1.43) |
High | 1547 | 1.26 (1.03 to 1.54) | 1542 | 1.08 (0.86 to 1.36) | 1379 | 1.46 (1.07 to 1.99) | 543 | 1.17 (0.75 to 1.81) |
Mineral dust | ||||||||
No | 25 030 | Ref. | 25 310 | Ref. | 23 181 | Ref. | 9099 | Ref. |
Low | 4605 | 0.92 (0.80 to 1.07) | 4664 | 1.01 (0.87 to 1.18) | 4193 | 1.02 (0.82 to 1.27) | 1640 | 0.74 (0.54 to 1.00) |
High | 1733 | 1.21 (1.00 to 1.46) | 1730 | 1.08 (0.87 to 1.35) | 1516 | 1.08 (0.78 to 1.49) | 602 | 1.20 (0.80 to 1.79) |
Gases/fumes | ||||||||
No | 17 188 | Ref. | 17 388 | Ref. | 15 927 | Ref. | 6274 | Ref. |
Low | 12 322 | 1.05 (0.94 to 1.17) | 12 452 | 0.99 (0.87 to 1.11) | 11 320 | 1.11 (0.93 to 1.32) | 4413 | 1.09 (0.89 to 1.33) |
High | 1858 | 1.15 (0.94 to 1.40) | 1864 | 1.04 (0.83 to 1.30) | 1643 | 1.16 (0.84 to 1.59) | 654 | 1.15 (0.76 to 1.74) |
Pesticides | ||||||||
No | 29 767 | 30 095 | Ref. | 27 446 | Ref. | 10 815 | Ref. | |
Low | 1227 | 1.19 (0.95 to 1.50) | 1232 | 1.03 (0.79 to 1.34) | 1110 | 1.36 (0.95 to 1.93) | 406 | 1.14 (0.69 to 1.87) |
High | 374 | 1.45 (1.01 to 2.07) | 377 | 1.49 (1.01 to 2.20) | 334 | 1.99 (1.19 to 3.31) | 120 | 2.24 (1.14 to 4.39) |
Solvents | ||||||||
No | 22 119 | Ref. | 22 390 | Ref. | 20 387 | Ref. | 8019 | Ref. |
Low | 7892 | 1.10 (0.98 to 1.23) | 7961 | 1.01 (0.89 to 1.14) | 7292 | 1.12 (0.93 to 1.33) | 2828 | 1.16 (0.94 to 1.43) |
High | 1357 | 1.08 (0.86 to 1.34) | 1353 | 1.06 (0.83 to 1.36) | 1211 | 0.92 (0.64 to 1.34) | 494 | 1.03 (0.66 to 1.62) |
Metals | ||||||||
No | 29 877 | Ref. | 30 216 | Ref. | 27 574 | Ref. | 10 784 | Ref. |
Low | 868 | 1.06 (0.81 to 1.37) | 868 | 1.11 (0.83 to 1.48) | 775 | 1.21 (0.81 to 1.80) | 338 | 0.72 (0.39 to 1.34) |
High | 623 | 1.10 (0.82 to 1.48) | 620 | 1.00 (0.71 to 1.41) | 541 | 0.73 (0.41 to 1.29) | 219 | 0.99 (0.51 to 1.92) |
Bold values are p<0.05.
The logistic regression was adjusted for baseline age, sex, education, monthly income, pack-years and smoking. No exposureas reference group.