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Table 3 Cox Proportional Hazard Model Analysis

From: Clinical application of tumor volume in advanced nasopharyngeal carcinoma to predict outcome

Variables

Overall survival

(RR, 95% CI)

p

Disease-specific survival

(RR, 95% CI))

p

Disease-free survival

(RR, 95% CI)

p

Loco-regional control

(RR, 95% CI)

p

Distant metastasis-free survival

(RR, 95% CI)

p

T1-2 vs. T3-4

1.29, 0.56-2.98

0.56

1.42, 0.41-4.86

0.58

0.85, 0.34-2.16

0.73

1.44, 0.27-7.64

0.67

1.00, 0.36-2.81

1.00

N0-2 vs. N3

2.47, 0.48-12.71

0.28

1.86, 0.15-23.26

0.63

2.85, 0.53-15.18

0.22

39.06, 1.55-983.27

0.03

2.77, 0.54-14.07

0.22

Cranial nerve involvement

0.71, 0.26-1.95

0.51

0.73, 0.17-3.13

0.67

0.65, 0.18-2.28

0.50

0.11, 0.006-2.10

0.14

0.95, 0.26-3.46

0.94

Supraclavicular nodes

0.74, 0.15-3.74

0.71

0.78, 0.06-9.59

0.85

0.45, 0.08-2.50

0.36

0.02, 0.001-0.87

0.04

0.68, 0.13-3.43

0.64

GTVprn (13 ml)

2.92, 1.22-6.98

0.02

4.10, 1.06-15.97

0.04

4.81, 1.73-13.36

< 0.01

16.83, 1.48-190.78

0.02

2.50, 0.84-7.43

0.10

  1. RR, risk ratio; 95% CI, 95% confidence interval; GTVprn, gross tumor volume of primary tumor plus retropharyngeal nodes