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
≥75%
≥1.099
7