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. 2020 Aug 28;17(17):6281. doi: 10.3390/ijerph17176281

Figure 4.

Figure 4

Forest plot of risk per 10 dB(A) × years increase in cumulative noise exposure (CNE) among studies where the average noise and duration of employment was reported for both the exposure and comparison groups, and where hypertension was defined as blood pressure exceeding 140/90 mmHg. The effect estimates of studies marked with * indicate that effect size (ES) were calculated from the reported prevalence, and studies marked with ** indicate that the odds ratio was corrected to represent the prevalence ratio.