| ICBT | Internet-based cognitive behavioral therapy intervention |
| ISI | insomnia-severity index |
| EQ-5D-5L | Health-related quality of life (Euroqol) |
| TFI | Tinnitus Functional Index |
| GAD7 | Generalized Anxiety Disorder Questionnaire |
| PHQ9 | Patient Health Questionnaire 9 |
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