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Noise generation based on highest level of education each patient completed
| Education level | Never/rarely hears noise | Sometimes/often/extremely often hears noise | Total |
|---|---|---|---|
| Never attended school | 1 (100%) | 0 (0%) | 1 |
| Grades 1–8 | 8 (89%) | 1 (11%) | 9 |
| Grades 9–11 | 25 (70%) | 11 (31%) | 36 |
| Grade 12 or GED (graduate) | 300 (67%) | 146 (33%) | 446 |
| College 1 year to 3 years | 340 (74%) | 117 (26%) | 457 |
| College 4 years or more (graduate) | 221 (69%) | 100 (31%) | 321 |
| Postgraduate 1 year or more | 223 (74%) | 80 (27%) | 303 |
