Variables | Mean (SD) | N (%) |
---|---|---|
Total person-years of follow-up | 34 735.5 | |
Age at entry, years | 36.1 (11.5) | |
Exposure years at entry, years | 14.4 (9.6) | |
Total exposure years, years | 27.3 (6.2) | |
Total cumulative dust exposure (mg-year/m3) | ||
Geometric mean | 108.7 | |
Range | 1.8–3613.5 | |
Smoking status | ||
Non-smoking | 237 (15.4) | |
Ever smoking | 1302 (84.6) | |
Vital status | ||
Alive | 1111 (72.2) | |
Deceased | 428 (27.8) |