Prognostic role of haematological indices in sudden sensorineural hearing loss: Review and meta-analysis

•This meta-analysis investigate the association between Haematological indices and clinical outcome in patient with SSNHL.•This is the first meta-analysis to make research about Prognostic role of Haematological indices in patients with SSNHL.•4 haematological indices (NLR,PLR, Neutrophils and lymphocyte) have a strong association with prognosis of SSNHL.