HRs for acute myocardial infarction (AMI) and other ischaemic heart disease (IHD) in occupations where at least 80% of the workers are exposed to at least level 2, to small (<1 μm) and large (>1 μm) particles, respectively
| Total | Men | Women | |||||||
| Cases (n) | HR* (95% CI) | HR† (95% CI) | Cases (n) | HR‡ (95% CI) | HR§ (95% CI) | Case (n) | HR‡ (95% CI) | HR§ (95% CI) | |
| AMI | |||||||||
| Ever exposed to | |||||||||
| Unexposed | 14 567 | 1.00 | 1.00 | 3080 | 1.00 | 1.00 | 11 487 | 1.00 | 1.00 |
| Small particles | 5024 | 1.12 (1.09 to 1.16) | 1.12 (1.09 to 1.15) | 4845 | 1.10 (1.06 to 1.13) | 1.10 (1.07 to 1.14) | 179 | 1.30 (1.12 to 1.51) | 1.30 (1.12 to 1.51) |
| Large particles | 38 866 | 1.16 (1.13 to 1.19) | 1.14 (1.10 to 1.18) | 34 663 | 1.10 (1.07 to 1.14) | 1.13 (1.08 to 1.18) | 4203 | 1.22 (1.18 to 1.27) | 1.17 (1.09 to 1.26) |
| Exposed for ≥5 years¶ | |||||||||
| Unexposed | 4246 | 1.00 | 1.00 | 815 | 1.00 | 1.00 | 3431 | 1.00 | 1.00 |
| Small particles | 1262 | 1.22 (1.14 to 1.32) | 1.21 (1.11 to 1.31) | 1241 | 1.16 (1.07 to 1.26) | 1.18 (1.07 to 1.29) | 21 | 1.37 (0.89 to 2.10) | 1.50 (0.95 to 2.37) |
| Large particles | 5303 | 1.17 (1.11 to 1.24) | 1.14 (1.06 to 1.23) | 4810 | 1.11 (1.04 to 1.19) | 1.11 (1.02 to 1.21) | 493 | 1.30 (1.18 to 1.42) | 1.39 (1.17 to 1.66) |
| IHD | |||||||||
| Ever exposed to | |||||||||
| Unexposed | 27 381 | 1.00 | 1.00 | 5097 | 1.00 | 1.00 | 22 284 | 1.00 | 1.00 |
| Small particles | 8241 | 1.13 (1.10 to 1.16) | 1.13 (1.11 to 1.16) | 7922 | 1.11 (1.09 to 1.14) | 1.12 (1.09 to 1.15) | 319 | 1.24 (1.11 to 1.39) | 1.24 (1.10 to 1.39) |
| Large particles | 62 696 | 1.11 (1.09 to 1.13) | 1.12 (1.09 to 1.15) | 55 204 | 1.10 (1.05 to 1.11) | 1.12 (1.09 to 1.16) | 7492 | 1.13 (1.10 to 1.16) | 1.12 (1.06 to 1.18) |
| Exposed for ≥5 years¶ | |||||||||
| Unexposed | 8754 | 1.00 | 1.00 | 1371 | 1.00 | 1.00 | 7383 | 1.00 | 1.00 |
| Small particles | 2153 | 1.25 (1.17 to 1.33) | 1.23 (1.17 to 1.31) | 2113 | 1.23 (1.14 to 1.32) | 1.19 (1.12 to 1.27) | 40 | 1.20 (0.88 to 1.64) | 1.34 (0.96 to 1.86) |
| Large particles | 8908 | 1.14 (1.08 to 1.21) | 1.14 (1.10 to 1.19) | 7911 | 1.12 (1.05 to 1.20) | 1.10 (1.04 to 1.16) | 997 | 1.22 (1.14 to 1.30) | 1.33 (1.18 to 1.51) |
One person may contribute to both exposed and unexposed person-years in the analyses.
↵* HRs adjusted for age, sex and particle size.
↵† HRs adjusted for age, sex, particle size, socioeconomic group and residential area.
↵‡ HRs adjusted for age and particle size.
↵§ HRs adjusted for age, particle size, socioeconomic group and residential area.
↵¶ Subjects exposed during at least two consecutive censuses, that is, in censuses 1980 and 1985.