Replanning Criteria and Timing Definition for Parotid Protection-Based Adaptive Radiation Therapy in Nasopharyngeal Carcinoma
Table 5
Consistency check of multiple factors.
Fraction number and combination
Sensitivity (%)
Specificity (%)
Positive predictive value (%)
Negative predictive value (%)
Kappa value
value
Number 11
a
69.2
66.7
69.2
66.7
0.359
0.011
b
87.5
52.4
25.9
91.7
0.143
0.155
Number 16
a
66.7
65.2
69.2
62.5
0.320
0.025
b
77.8
53.7
26.9
91.7
0.181
0.087
Number 21
a
84.6
54.2
66.7
76.5
0.392
0.004
b
44.0
95.7
91.7
61.1
0.388
0.002
a: two of the 3 parameters (initial parotid volume, initial parotid , and weight loss rate) reached their cut-off values. b: all the 3 parameters reached their cut-off values.
