Table 5.
Prevalence of CT identified pleural plaques or irregular opacities by occupation
| All | Pleural plaques | Irregular opacities | |
|---|---|---|---|
| Number of casesa | 615† | 80¶ | 86§ |
| Occupation | Number (%) | ||
|
a Number of cases which can be allocated into a particular occupation. † Among the 885 patients with primary lung cancer. ¶ Among the 113 cases with pleural plaques on chest CT. § Among the 107 cases with irregular opacities on chest CT. | |||
| Professional & engineering | 44 | 2 (4.6) | 6 (13.6) |
| Administrative & managerial | 10 | – | 1 (10.0) |
| Clerical | 55 | 4 (7.3) | 5 (9.1) |
| Sales | 43 | 2 (4.7) | 3 (7.0) |
| Service | 27 | 2 (7.4) | – |
| Security | 9 | 4 (44.4) | 3 (33.3) |
| Agriculture, forestry & fishery | 26 | – | 3 (11.5) |
| Transport & communication | 36 | 5 (13.9) | 3 (8.3) |
| Manufacturing and general labor | 215 | 52 (24.2) | 45 (20.9) |
| Housewife | 46 | 3 (6.5) | 3 (6.5) |
| Jobless | 54 | 2 (3.7) | 10 (18.5) |
| Other | 50 | 4 (8.0) | 4 (8.0) |