Data (n (%)) description of the lung cancer case-control study
| France | Austria | ||||
|---|---|---|---|---|---|
| Cases | Controls | Cases | Controls | ||
| *Percentage among subjects with known smoking habits; †as defined in the text; ‡smoker without further information; §in France subjects with a history of underground mining in other mines (two cases and four controls), or tunnelling (three controls), in Austria all underground mining (two cases and four controls in site B, one case and no control in site C, two cases and no control in site D). | |||||
| Administrative information: | |||||
| Year of hire | <1940 | 5 (22) | 21 (31) | — | — |
| 1940–1959 | 12 (52) | 30 (45) | 2 (29) | 8 (14) | |
| ≥1960 | 6 (26) | 16 (24) | 5 (71) | 13 (62) | |
| Information on smoking: | |||||
| Missing information | 11 (48) | 17 (25) | — | — | |
| Data source* | Previous documents | 9 (75) | 33 (66) | 5 (71) | 8 (38) |
| Colleagues | 3 (25) | 17 (34) | 2 (29) | 13 (62) | |
| Classification*† | Non-smoker | 1 (8) | 22 (44) | — | 12 (57) |
| Light smoker | 2 (17) | 5 (10) | 2 (29) | 3 (14) | |
| Heavy smoker | 8 (67) | 16 (32) | 4 (57) | 1 (5) | |
| Smoker‡ | 1 (8) | 7 (14) | 1 (14) | 5 (24) | |
| Occupational exposure information | |||||
| Missing job history | — | 1 (1) | — | — | |
| Data source | Previous documents | 21 (91) | 62 (94) | 7 (100) | 21 (100) |
| Colleagues | 2 (9) | 4 (6) | — | — | |
| Employed as | Manual worker | 22 (96) | 53 (80) | 6 (86) | 17 (81) |
| Office worker | 1 (4) | 11 (17) | 1 (14) | 4 (19) | |
| Manager | — | 2 (3) | — | — | |
| Exposure to talc | None | 6 (26) | 20 (30) | 3 (43) | 3 (14) |
| Light | 3 (13) | 9 (14 ) | — | 2 (10) | |
| Medium | 4 (17) | 8 (12) | 2 (29) | 8 (38) | |
| Heavy | 10 (43) | 29 (44) | 2 (29) | 8 (38) | |
| Other exposures | Quartz† | 3 (13) | 5 (8) | 4 (57) | 6 (29) |
| Other carcinogens | — | 1 (1) | 1 (14) | — | |
| Underground work§ | 2 (9) | 7 (11) | 5 (71) | 4 (19) | |
| Total | 23 | 67 | 7 | 21 | |