Descriptive statistics for 933 currently employed males, 244 currently employed females, and 219 formerly employed males at last test date
| Cumulative exposure (fibre-months/cc) at last test | ||||
| ≤15 | >15–60 | >60 | All | |
| Currently employed males (n=933) | ||||
| Number (%) | 470 (50.4) | 270 (28.9) | 193 (20.7) | 933 |
| Mean age (years) | 38.0 | 43.6 | 50.6 | 42.2 |
| Mean weight (kg) | 89.6 | 92.8 | 90.0 | 90.6 |
| Mean cumulative pack-years (smokers only) | 15.8 | 19.7 | 23.8 | 19.1 |
| Current smoking status: number (%) | 96 (20.4) | 69 (25.6) | 69 (35.8) | |
| Mean production years at last test (n=607; excludes non-production workers) | 4.8 | 7.4 | 8.3 | 6.7 |
| Mean number of spirometry tests | 3.4 | 5.5 | 6.0 | 4.5 |
| Mean FVC as a per cent of predicted | 98.6 | 96.7 | 94.7 | 97.3 |
| Mean FEV1 as a per cent of predicted | 95.6 | 92.6 | 90.2 | 93.6 |
| Cumulative exposure (fibre-months/cc) at last test | |||
| ≤15 | >15 | All | |
| Currently employed females (n=244) | |||
| Number (%) | 191 (78.3) | 53 (21.7) | 244 |
| Mean age (years) | 38.4 | 46.9 | 40.3 |
| Mean weight (kg) | 72.1 | 77.5 | 73.3 |
| Mean cumulative pack-years (n=119, smokers only) | 16.7 | 19.5 | 17.3 |
| Current smoking status: number (%) | 56 (29.3) | 20 (37.8) | |
| Mean production years at last test (n=144; excludes non-production workers) | 4.3 | 12.8 | 7.0 |
| Mean number of spirometry tests | 3.8 | 5.8 | 4.2 |
| Mean FVC as a per cent of predicted | 99.6 | 93.7 | 98.3 |
| Mean FEV1 as a per cent of predicted | 97.4 | 90.8 | 95.9 |
| Cumulative exposure (fibre-months/cc) at last test | ||||
| ≤15 | >15–60 | >60 | All | |
| Formerly employed males (n=219) | ||||
| Number (%) | 114 (52.1) | 63 (28.8) | 42 (19.2) | 219 |
| Mean age (years) | 52.7 | 54.9 | 62.4 | 55.2 |
| Mean weight (kg) | 87.8 | 93.4 | 85.6 | 89.0 |
| Mean cumulative pack-years (n=152, smokers only) | 22.4 | 35.2 | 34.6 | 28.6 |
| Current smoking status: number (%) | 33 (28.9) | 19 (30.2) | 13 (31.0) | |
| Mean production years at last test (n=168, excludes non-production workers) | 2.7 | 5.3 | 9.6 | 5.2 |
| Mean number of spirometry tests | 3.3 | 3.5 | 3.6 | 3.5 |
| Mean FVC as a per cent of predicted | 98.1 | 94.9 | 91.0 | 97.1 |
| Mean FEV1 as a per cent of predicted | 94.3 | 91.0 | 88.9 | 92.3 |
| Mean years since last RCF employment | 16.9 | 14.4 | 18.2 | 16.5 |