Table 2. Incidence rate ratios (IRRs) of MI per 10 dB higher level of exposure to road traffic noise based on 50 614 cohort participants.
| Exposure to road traffic noise, Lden (per 10 dB) | Adjusted for age | Fully adjusted a | Fully adjusted a + diabetes and measured blood pressure and cholesterol | |
| N cases | IRR (95% CI) | IRR (95% CI) | IRR (95% CI) | |
| Lden at diagnosis | 1600 | 1.14 (1.06–1.23) | 1.12 (1.02–1.22) | 1.10 (1.00–1.20) |
| Lden 5-year preceding diagnosis | 1600 | 1.14 (1.06–1.23) | 1.12 (1.02–1.23) | 1.10 (1.00–1.21) |
IRR, incidence rate ratio; CI, confidence interval; dB, decibel.
a
Adjusted for age, sex, smoking status, smoking duration, smoking intensity, intake of fruit, intake of vegetables, BMI, alcohol intake and physical activity, calendar year, education, railway and airport noise and residential exposure to NOx.