Odds ratios and 95% confidence intervals for selected job titles and branches of industry obtained using three different methods to model smoking (models 1, 3, and 7 as described in table 1; two Italian areas, 1990–1992)
| Item and code | Number of cases | Model* (OR, 95% CI) | ||
|---|---|---|---|---|
| 1 | 3 | 7 | ||
| *See table 1 for description of the models. | ||||
| CI, confidence interval; NEC, not specified elsewhere; ISCO, international standard classification of occupations10; ISIC, international standard industrial classification11; OR, odds ratio. | ||||
| Job title (ISCO code) | ||||
| Professional, technical, and related workers (0, 1) | 91 | 0.5 (0.4 to 0.7) | 0.6 (0.4 to 0.8) | 0.6 (0.5 to 0.9) |
| Mail distribution clerks (37) | 58 | 1.5 (1.0 to 2.2) | 1.7 (1.1 to 2.5) | 1.7 (1.1 to 2.7) |
| Salesmen, shop assistants, and related workers (45) | 111 | 1.5 (1.1 to 2.0) | 1.3 (1.0 to 1.8) | 1.3 (1.0 to 1.8) |
| Metal processers (72) | 93 | 1.4 (1.0 to 1.9) | 1.4 (1.0 to 1.9) | 1.4 (1.0 to 2.0) |
| Plumbers, welders, sheet metal, and structural metal preparers and erectors (87) | 99 | 1.4 (1.1 to 1.9) | 1.4 (1.0 to 1.9) | 1.5 (1.1 to 2.0) |
| Blue collar workers (7, 8, 9) | 757 | 1.8 (1.5 to 2.2) | 1.6 (1.2 to 2.0) | 1.6 (1.3 to 2.0) |
| Labourers (99) | 201 | 1.5 (1.2 to 1.9) | 1.4 (1.1 to 1.7) | 1.3 (1.1 to 1.7) |
| Salesmen, shop assistant, and demonstrators (451) | 65 | 1.5 (1.0 to 2.1) | 1.2 (0.8 to 1.8) | 1.2 (0.8 to 1.8) |
| Street vendors, canvassers, and news vendors (452) | 50 | 1.5 (1.0 to 2.3) | 1.5 (0.9 to 2.3) | 1.5 (0.9 to 2.3) |
| Dockers and freight handlers (971) | 91 | 1.5 (1.1 to 2.1) | 1.4 (1.0 to 1.9) | 1.3 (0.9 to 1.9) |
| Retail trade salesmen (4513) | 54 | 1.6 (1.0 to 2.4) | 1.3 (0.9 to 2.0) | 1.3 (0.8 to 2.0) |
| Branches of industry (ISIC code) | ||||
| Financing, insurance, real estate, and business services (8) | 58 | 0.7 (0.5 to 1.0) | 0.7 (0.5 to 1.1) | 0.7 (0.5 to 1.1) |
| Manufacture of non-metallic mineral products, excluding products of petroleum and coal (36) | 58 | 1.5 (1.0 to 2.1) | 1.3 (0.9 to 2.0) | 1.3 (0.9 to 2.0) |
| Transport and storage (71) | 148 | 0.8 (0.7 to 1.1) | 0.8 (0.6 to 1.0) | 0.7 (0.6 to 0.9) |
| Social and related community services (93) | 54 | 0.5 (0.4 to 0.8) | 0.6 (0.4 to 0.9) | 0.6 (0.4 to 0.9) |
| Manufacture of fabricated metal products, excluding machinery and equipment (381) | 138 | 1.7 (1.3 to 2.2) | 1.6 (1.2 to 2.1) | 1.6 (1.2 to 2.1) |
| Land transport (711) | 100 | 0.8 (0.6 to 1.0) | 0.7 (0.6 to 1.0) | 0.7 (0.5 to 0.9) |
| Manufacture of fabricated metal products, excluding machinery and equipment, NEC (3819) | 93 | 2.1 (1.5 to 2.9) | 2.0 (1.4 to 2.8) | 2.0 (1.4 to 2.9) |
| Freight transport by road (7114) | 70 | 0.8 (0.6 to 1.1) | 0.7 (0.5 to 1.0) | 0.7 (0.5 to 0.9) |