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Reliability Testing of Eustachian Tube Dysfunction Questionnaire Showing Overall Internal Consistency and Internal Consistency With Each Item Deleted.
| Item | Cronbach α if Item Deleted |
|---|---|
| 1. Pressure | .676 |
| 2. Pain | .652 |
| 3. Feeling clogged | .668 |
| 4. Cold/sinusitis problems | .676 |
| 5. Crackling/popping | .693 |
| 6. Ringing | .704 |
| 7. Feeling muffled | .678 |
| Overall | .711 |
