Early hearing improvement predicts complete recovery in sudden hearing loss.

The study included 240 patients (120 with complete recovery and 120 without complete recovery).

Younger age and a shorter onset-to-treatment interval were independently associated with a higher probability of complete recovery (age: β per 1-year increase, -0.009; 95% CI, -0.013 to -0.005; p < 0.001; onset-to-treatment interval: β per 1-day increase, -0.013; 95% CI, -0.018 to -0.009; p < 0.001).