OR* of lung cancer for work as a painter from two case–control studies in Montreal
| Exposure level | Study I: 1979–1986 | Study II: 1996–2001 | Pooled studies: population controls only† | Pooled studies: population and cancer controls‡ | ||||||
| Population controls | Cancer controls | Population controls | ||||||||
| Ca/Co | OR (95% CI) | Ca/Co | OR (95% CI) | Ca/Co | OR (95% CI) | Ca/Co | OR (95% CI) | Ca/Co | OR (95% CI) | |
| Total N | 857/533 | 857/1349 | 765/899 | 1622/1432 | 1622/1965 | |||||
| Never a painter | 814/516 | 1.0 | 814/1310 | 1.0 | 743/876 | 1.0 | 1557/1392 | 1.0 | 1557/1903 | 1.0 |
| Painter | ||||||||||
| Any duration | 43/17 | 1.2 (0.5 to 2.3) | 43/40 | 1.7 (1.0 to 2.6) | 22/23 | 1.3 (0.7 to 2.5) | 65/40 | 1.6 (1.0 to 2.4) | 65/62 | 1.3 (0.9 to 2.2) |
| ≤10 years | 26/8 | 2.3 (0.9 to 5.2) | 26/26 | 1.8 (1.0 to 3.2) | 12/8 | 1.4 (0.5 to 4.9) | 38/16 | 2.0 (0.9 to 4.1) | 38/26 | 1.6 (0.9 to 3.0) |
| >10 years | 17/9 | 1.1 (0.4 to 3.8) | 17/14 | 1.5 (0.9 to 2.8) | 10/15 | 1.1 (0.6 to 2.0) | 27/24 | 1.2 (0.5 to 1.8) | 27/36 | 1.2 (0.5 to 2.0) |
↵* OR adjusted for age, family income, ethnicity, respondent status, years of schooling, tobacco smoking.
↵† For study I we included only the 533 population controls. The statistical model included, in addition to those listed above, a variable for study (I or II).
↵‡ For study I we included all 533 population controls and 533 randomly drawn cancer controls. The statistical model included, in addition to those listed above, a variable for study (I or II).
Ca/Co, cases/controls.