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Table 3 The risk of developing LNN according to the model

From: A model to predict the risk of lethal nasopharyngeal necrosis after re-irradiation with intensity-modulated radiotherapy in nasopharyngeal carcinoma patients

Risk degree

No. of total patients

Risk of developing LNN

Value of logitπ

No. of LNN patients

I

56

<25%

<−1.099

1

II

90

25%–50%

−1.099 to 0

11

III

46

50%–75%

0–1.099

12

IV

12

≥75%

≥1.099

7

  1. Logitπ was calculated from the model and classified into four degrees according to the corresponding risk of developing LNN
  2. LNN lethal nasopharyngeal necrosis