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Table 1 Patient and treatment characteristics; N = 36 patients

From: Cochlea sparing effects of intensity modulated radiation therapy in head and neck cancers patients: a long-term follow-up study

Age (years), median (range)  
  Short-term 59 (32–78)
  Long-term 66 (39–85)
Gender  
  Male 25 (70%)
  Female 11 (30%)
Audiological follow-up, median  
  Short-term (months) 3.5 (1.0–14.1)
  Long-term (years) 7.6 (3.7–9.3)
Dose to cochlea in Gray  
  Mean 17.8
  Median 13.1
  Range 1.0–66.6
Primary tumor site  
  Parotid gland 11 (30%)
  Oropharynx 9 (25%)
  Larynx 8 (22%)
  Oral cavity 3 (8%)
  Maxillary sinus 1 (3%)
  Submandibular gland 1 (3%)
  Nasal cavity 1 (3%)
  External ear 1 (3%)
  Unknown primary 1 (3%)
T classification  
  1 7 (19%)
  2 18 (50%)
  3 2 (5.5%)
  4 2 (5.5%)
  Unknown primary 1 (3%)
  Not applicable* 6 (17%)
N classification  
  0 22 (61%)
  1 4 (11%)
  2 4 (11%)
  Not applicable* 6 (17%)