Demographic data for men and women occupationally exposed, respectively, unexposed to respirable crystalline silica at start of follow-up in 1992.
| Men | Women | |||
| Unexposed n=448 192 | Exposed n=157 054 | Unexposed n=468 903 | Exposed n=11 704 | |
| Age at inclusion* | 46.1 (SD 9.4) | 46.5 (SD 9.4) | 47.3 (SD 10.0) | 48.6 (SD 9.5) |
| AMI cases by age at inclusion | ||||
| 30–39 | 2120 | 625 | 491 | 16 |
| 40–49 | 7778 | 2759 | 1702 | 72 |
| 50–59 | 7145 | 2680 | 3286 | 73 |
| 60–69 | 329 | 55 | 105 | 2 |
| Total | 28 298 | 10 612 | 9, 301 | 281 |
| Unskilled workers† | 236 684 (52.8%) | 69 256 (44.1%) | 354 287 (75.6%) | 9688 (82.8%) |
| Skilled workers† | 211 508 (47.2%) | 87 798 (55.9%) | 114 616 (24.4%) | 2, 016 (17.2%) |
| Urbanisation index† | ||||
| Missing data | 89 515 (20.0%) | 36 602 (23.3%) | 81 492 (17.4%) | 1963 (16.8%) |
| 200–499 | 70 311 (15.7%) | 16 582 (10.6%) | 71 682 (15.3%) | 850 (7.3%) |
| 500–999 | 46 252 (10.3%) | 12 599 (8.0%) | 52 425 (11.2%) | 815 (7.0%) |
| 1000–1999 | 51 781 (11.6%) | 18 783 (12.0%) | 60 045 (12.8%) | 1571 (13.4%) |
| 2000–4999 | 43 962 (9.8%) | 15 161 (9.7%) | 48 772 (10.4%) | 1465 (12.5%) |
| 5000–9999 | 44 119 (9.8%) | 17 530 (11.2%) | 48 520 (10.3%) | 1764 (15.1%) |
| 10 000–19 999 | 42 666 (9.5%) | 16 111 (10.3%) | 45 700 (9.7%) | 1415 (12.1%) |
| 20 000–49 999 | 24 983 (5.6%) | 9602 (6.1%) | 25 614 (5.5%) | 825 (7.0%) |
| 50 000–99 999 | 19 548 (4.4%) | 7863 (5.0%) | 19 784 (4.2%) | 614 (5.2%) |
| >1 00 000 | 15 055 (3.4%) | 6221 (4.0%) | 14 869 (3.2%) | 422 (3.6%) |
*Age at inclusion in the study is presented as arithmetic mean, with SD in brackets.
†Urbanisation index categorised into nine classes based on number of inhabitants in the community.
AMI, acute myocardial infarction.