HRs in occupations with exposure to small particles (<1 μm) for acute myocardial infarction (AMI) and ischaemic heart diseases (IHD)
| Occupations | Exposed men* (n) | HR† (95% CI) | Exposed women‡ (n) | HR† (95% CI) |
| AMI | ||||
| Firefighters | 289 | 0.91 (0.81 to 1.03) | – | – |
| Welders | 3368 | 1.19 (1.13 to 1.25) | 110 | 1.29 (1.07 to 1.56) |
| Furnacemen | 956 | 1.28 (1.19 to 1.37) | 64 | 2.38 (1.86 to 3.05) |
| Metal annealers | 272 | 1.30 (1.15 to 1.47) | 6 | 1.83 (0.82 to 4.07) |
| IHD | ||||
| Firefighters | 397 | 0.90 (0.81 to 1.00) | – | – |
| Welders | 4499 | 1.18 (1.13 to 1.23) | 162 | 1.14 (0.98 to 1.33) |
| Furnacemen | 1191 | 1.19 (1.11 to 1.27) | 85 | 1.88 (1.52 to 2.33) |
| Metal annealers | 355 | 1.27 (1.14 to 1.41) | 7 | 1.23 (0.59 to 2.58) |