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Table 1 Basic characteristics of patients and healthy controls

From: Pre-radiotherapy plasma carotenoids and markers of oxidative stress are associated with survival in head and neck squamous cell carcinoma patients: a prospective study

Parameters   Patients Controls
Age (years)a, b   63 (34-85) 51 (34-80)
BMIa   24.8 (15.8-40.1) 25.8 (19.3-39.6)
Gender Men 69 90
  Women 9 10
Tumour localization Larynx 17 -
  Hypopharynx 9 -
  Oral cavity 21 -
  Oropharynx 28 -
  Nasopharynx 3 -
Stage 1 6 -
  2 20 -
  3 17 -
  4 35 -
Treatment Surgery+radiotherapy 30 -
  Radiotherapy 48 -
Smoking status Never smoker 28 34
  Former smoker 22 30
  Current smoker 28 36
  1. amedian (range)
  2. bp < 0.001