Table 1 Population characteristics, N = 1,906
| Â | N (%) |
|---|---|
Age, mean (range) | 45 (20–71) |
Female | 921 (48) |
Current smoker Ex smoker | 775 (41) 508 (27) |
Ex smoker | 508 (27) |
Occupational exposure1: | Â |
organic dust | 401 (21) |
mineral dust | 525 (27) |
gases/fumes | 586 (31) |
any exposure | 840 (44) |
Atopy | 635 (33) |
FEV1 %predicted, mean (range) | 111 (71–166) |
Current wheeze | 393 (21) |
Current asthma | 130 (7) |
Chronic bronchitis | 72 (4) |