Table 1 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)
<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)

Source: Davies et al.¹⁰