Summary of main results
In this study, we found that most initial tinnitus along with the onset of SSNHL of the cases were classified as level 3 and 4. Initial tinnitus level was remarkably associated with tinnitus efficacy at discharge and an independent risk factor for the long-term prognosis of residual tinnitus after SSNHL. The median recovery time was 23.00 ± 3.80 months.