Description of Collaborative Activity: |
To provide support to the National Center for Health Statistics (NCHS), CDC for audiometry testing and related questions on hearing loss and noise exposure in adults ages 20 to 69 years in the National Health and Nutrition Examination Survey (NHANES), including hearing thresholds in each ear at 500, 1000, 2000, 3000, 4000, 6000, and 8000 Hz. |