Table 1.

Definitions of the risk factor, risk factor levels and the minimum risk exposure level.

Concept	Definition
Risk factor	Occupational noise is the exposure at the workplace to an unpleasant or unwanted sound
Risk factor levels	1. Any occupational exposure to noise (≥85 dBA) 2. No occupational exposure to noise (<85 dBA)
Theoretical minimum risk exposure level	No occupational exposure to noise (<85 dBA)

Source:Teixeira et al. (2019).