Table 2.
Incidence of nasopharynx cancer (NPC) and sinonasal cancer (SNC) among workers exposed to different levels of wood dust by industry and occupation.
| Exposed workers a | Low (%) | Medium (%) | High (%) | NPC Cases (%) b |
SNC Cases (%) c |
|
|---|---|---|---|---|---|---|
| Total | ||||||
| 100 1,354,263 |
28 (379,228) | 43 (575,834) | 29 (399,201) | 100 (11) |
100 (11) |
|
| Industrial sector | ||||||
| Accommodation and food services | 7131 | 100 | 0 | 0 | 0 (<0.01) | 0 (0.5) |
| Agriculture | 2681 | 97 | 3 | 0 | 0 (0.01) | 0 (0.2) |
| Business/management/other support | 2229 | 100 | 0 | 0 | 0 (<0.01) | 0 (0.2) |
| Construction | 560,139 | 27 | 73 | 0 | 5 (43.4) | 4 (38.5) |
| Educational services | 23,491 | 31 | 4 | 65 | 0 (1.1) | 0 (1.7) |
| Finance/insurance/real estate/leasing | 7638 | 100 | 0 | 0 | 0 (<0.01) | 0 (0.5) |
| Fishing/hunting/trap | 81 | 100 | 0 | 0 | 0 (<0.01) | 0 (0.01) |
| Forestry and logging | 51,251 | 47 | 1 | 52 | 0 (3.0) | 0 (3.9) |
| Health care/social assistance | 7592 | 100 | 0 | 0 | 0 (<0.01) | 0 (0.5) |
| Info/culture/recreation | 8224 | 100 | 0 | 0 | 0 (<0.01) | 0 (0.5) |
| Manufacturing | 585,951 | 12 | 27 | 61 | 6 (51.7) | 5 (47.2) |
| Mining/oil/gas extract | 5046 | 100 | 0 | 0 | 0 (<0.01) | 0 (0.4) |
| Other services | 9469 | 100 | 0 | 0 | 0 (<0.01) | 0 (0.6) |
| Professional scientific/technical service | 7896 | 97 | 3 | 0 | 0 (0.02) | 0 (0.5) |
| Public administration | 19,832 | 84 | 16 | 0 | 0 (0.4) | 0 (1.4) |
| Trade | 44,517 | 92 | 8 | 0 | 0 (0.4) | 0 (2.7) |
| Transportation/warehousing | 7405 | 100 | 0 | 0 | 0 (<0.01) | 0 (0.5) |
| Utilities | 3689 | 100 | 0 | 0 | 0 (<0.01) | 0 (0.3) |
| Occupational group | ||||||
| Construction trades | 710,805 | 26 | 60 | 14 | 6 (54.1) | 5 (50.9) |
| Contractors, supervisors in trades, transportation | 94,732 | 100 | 0 | 0 | 0 (0.01) | 1(6.5) |
| Labourer in processing, manufacturing, utilities | 101,095 | 6 | 11 | 84 | 1 (9.7) | 1(7.9) |
| Machine operators and assemblers in manufacturing | 215,202 | 9 | 19 | 72 | 2 (20.2) | 2 (18.4) |
| Natural and applied sciences | 3438 | 100 | 0 | 0 | 0 (<0.01) | 0 (0.2) |
| Art, culture, recreation and sport | 315 | 19 | 81 | 0 | 0 (0.02) | 0 (4.3) |
| Social science/government service/religion | 76 | 100 | 0 | 0 | 0 (<0.01) | 0 (0.02) |
| Occupations unique to primary industry | 57,281 | 52 | 1 | 47 | 0 (3.0) | 0 (0.01) |
| Other management occupations | 310 | 100 | 0 | 0% | 0 (<0.01) | 0 (0.02) |
| Other trades occupations | 75,231 | 20 | 80 | 0 | 1 (6) | 1 (4.9) |
| Sales and service occupations | 9132 | 4 | 96 | 0 | 0 (0.9) | 0 (0.6) |
| Teachers and professors | 16,185 | 0 | 6 | 94 | 0 (1.1) | 0 (1.2) |
| Trades helpers, construction, transportation labourers | 69,002 | 33 | 39 | 29 | 1 (4.9) | 1 (5.1) |
| Transport and equipment operators | 1459 | 75 | 25 | 0 | 0 (0.04) | 0 (0.1) |
Note. a total number of the workers exposed to wood dust in 2011, b incidence of occupational nasopharynx cancer, c incidence of occupational sinonasal cancer. Owing to rounding, columns and rows may not sum to the exact same value.