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Table 1 Detailed description of demographics, tumor localization, histological differentiation, and N status of all cases in this series

From: Management of locally advanced laryngeal cancer

Parameter Characteristic Total number (cases) Relative frequency (%)
Sex Male 354 92.2
  Female 30 7.8
Age (grouped) ≤59 194 50.5
  >59 190 49.5
Smoking status Smokers 264 68.8
  Ex-smokers 81 21.1
  Non-smokers 39 10.1
  n.a. 384  
Tumor localization Supraglottic 208 54.2
  Glottic 142 37.0
  Subglottic 15 3.9
  Not specified 19 4.9
Histological differentiation G1 26 6.8
G2 232 60.4
G1/2 258 67.2
  G3 88 22.9
G4 15 3.9
G3/4 103 26.8
  Unknown 23 6.0
Total N N0 188 49.0
  N1 29 7.6
  N2a 7 1.8
  N2b 50 13.0
  N2c 75 19.5
  N3 35 9.1
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