Skip to main content
. 2023 Jan 6;131(1):017003. doi: 10.1289/EHP10745

Figure 1.

Figure 1 is a set of six ribbon line graphs. The first two graphs, plotting hazard ratio for ischemic heart disease, ranging from 0.8 to 1.4 in increments of 0.1 (y-axis) across road traffic noise, day-evening-night noise level (decibel), ranging from 40 to 70 in increments of 10 and Railway noise, day-evening-night noise level (decibel), ranging from 40 to 70 in increments of 10 (x-axis). In the middle, the two graphs, plotting hazard ratio for ischemic heart disease excluding angina pectoris, ranging from 0.8 to 1.4 in increments of 0.1 (y-axis) across road traffic noise, day-evening-night noise level (decibel), ranging from 40 to 70 in increments of 10 and Railway noise, day-evening-night noise level (decibel), ranging from 40 to 70 in increments of 10 (x-axis). At the end, the two graphs, plotting hazard ratio for Myocardial infraction, ranging from 0.8 to 1.4 in increments of 0.1 (y-axis) across road traffic noise, day-evening-night noise level (decibel), ranging from 40 to 70 in increments of 10 and Railway noise, day-evening-night noise level (decibel), ranging from 40 to 70 in increments of 10 (x-axis).

HR and 95% CI for IHD, IHD excluding angina pectoris, and myocardial infarction in relation to road traffic and railway noise exposure during 5 y prior to the event in restricted cubic spline analyses of nine cohorts from Denmark and Sweden. All results are adjusted for age (by design), cohort (strata), sex (men/women), calendar year (in 5 y periods), educational level (low/medium/high), marital status (single/married), area-income (quartiles), and other noise sources indicator (yes/no: road, railway, and aircraft noise; for the three cohorts without aircraft noise information, all cohort members were assigned as no exposure). Note: Corresponding numeric data are available in the Supplementary Excel file “Numeric data for Figures EHP10745.” CI, confidence interval; HR, hazard ratio; IHD, ischemic heart disease; Lden, day-evening night noise level based on energy equivalent noise level over a whole day with a penalty of 10 dB(A) for nighttime noise (23.00–7.00) and a penalty of 5 dB(A) for evening noise (i.e., 19.00–23.00).