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Table 1 Variables and Relative Classes for 277 patients treated with linear sources

From: Brachytherapy of stage II mobile tongue carcinoma. Prediction of local control and QOL

Variables Classes No. %
Sex Male 169 61
  Female 108 39
Age at diagnosis (yrs) ≤60 174 63
  > 60 103 37
Growth pattern Superficial 81 29
  Exophytic 121 44
  Invasive 75 27
Site Side 254 92
  Tip 1 0
  Lower 20 7
  Upper 2 1
Leukoplakia Absent 67 24
  Present 210 76
Tumor thickness (mm) ≤5 106 38
  6–10 97 35
  11–15 40 14
  > 15 34 12
Maximum diameter (mm) ≤30 196 71
  > 30 81 29
Brachytherapy source 192Ir hairpin 104 38
  226Ra needle 162 58
  137Cs needle 11 4
Brachytherapy dose (Gy) ≤70 216 78
  > 70 61 22
Brachytherapy plane Single 242 87
  Double 32 12
  Volume 3 1
External irradiation + 45 16
  - 232 84