Association of deaths resulting from acute myocardial infarction and cumulative noise exposure
| Cumulative exposure (dB(A)-year) | Full cohort (n = 27464) | Subgroup without hearing protection (n = 8668) | ||||
|---|---|---|---|---|---|---|
| Person-years | Deaths | SMR (95% CI) | Person-years | Deaths | SMR (95% CI) | |
| Source: Davies et al.10 | ||||||
| <100 | 314128 | 226 | 1.0 (0.9 to 1.1) | 133556 | 174 | 1.0 (0.9 to 1.2) |
| 100–104 | 155837 | 228 | 1.0 (0.9 to 1.2) | 58940 | 136 | 1.0 (0.9 to 1.2) |
| 105–109 | 116303 | 231 | 1.1 (1.0 to 1.2) | 37133 | 120 | 1.2 (1.0 to 1.5) |
| 110–114 | 63998 | 165 | 1.0 (0.9 to 1.2) | 14646 | 71 | 1.3 (1.0 to 1.6) |
| 115+ | 18479 | 60 | 1.1 (0.8 to 1.4) | 3071 | 19 | 1.3 (0.8 to 2.1) |