Table 2 History of asbestos exposure in subjects with asbestosis and/or pleural plaque
|  | Exposure type % (n) | Exposure year (mean ± SD) | ||||
|---|---|---|---|---|---|---|
Only Occupational | Only Non-occupational | Occupational + non-occupational | Only Occupational | Only Non-occupational | Occupational + non-occupational | |
Group 5 (n = 26) | 34.6 (9) | 23.1 (6) | 42.3 (11) | 10.3 ± 6.3 | NA | 11.2 ± 6.1 |
Group 6 (n = 17) | 41.2 (7) | 11.8 (2) | 47 (8) | 8.6 ± 4.8 | NA | 7.5 ± 5.9 |
Group 7 (n = 51) | 33.3 (17) | 27.5 (14) | 39.2 (20) | 10.1 ± 6.4 | NA | 8.9 ± 4.4 |