Characteristics of the study population at baseline examination
| n | % | |
|---|---|---|
| *Unknown duration of employment: n = 1428. | ||
| Occupation | ||
| Plumbers | 2156 | 15 |
| Carpenters | 2012 | 14 |
| Painters | 2281 | 16 |
| Plasterers | 1695 | 12 |
| Bricklayers | 4359 | 30 |
| Labourers | 1971 | 14 |
| Age at baseline examination | ||
| 25–39 years | 6424 | 44 |
| 40–44 years | 1529 | 11 |
| 45–49 years | 1953 | 14 |
| 50–54 years | 2586 | 18 |
| 55–59 years | 1680 | 12 |
| 60–64 years | 302 | 2 |
| Mean (SD) years | 41.7 (10.8) | |
| Nationality | ||
| German | 11974 | 83 |
| Former Yugoslavia | 737 | 5 |
| Italian | 674 | 5 |
| Turkish | 655 | 4 |
| Other | 434 | 3 |
| Duration of employment in construction industry (years)* | ||
| <15 | 4914 | 38 |
| 15–29 | 4448 | 34 |
| ⩾30 | 3684 | 28 |
| Mean (SD) | 20.7 (11.9) | |
| Total | 14474 | 100 |