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Table 4 Subgroup analysis by tumor sites

From: Prognostic value of lymph node ratio in laryngeal and hypopharyngeal squamous cell carcinoma: a systematic review and meta-analysis

Sites OS DSS DFS
Hypopharyngeal cancer HR 1.87, 95%CI 1.37 to 2.56, 6 studies HR 1.89, 95%CI 1.47 to 2.42, 7 studies HR 1.99, 95%CI 1.48 to 2.68, 3 studies
Laryngeal cancer HR 1.74 95%CI (1.05 to 2.88), 2 studies HR 2.11, 95%CI (1.34 to 3.34), 3 studies NA
  1. OS overall survival, DSS disease-specific survival, DFS disease-free survival, NA not available