Age Adjustment in Audiometric Tests: Updated Results and Interpretations

Age adjustment is intended to represent the typical longitudinal hearing changes associated with age. In the US, age adjustments are not recommended by the National Institute for Occupational Safety and Health (NIOSH) or permitted by the Department of Defense. They are optional for workers within the scope of the US Occupational Health and Safety Administration (OSHA) (i.e., general industry) and other regulatory bodies.