Factor

pvalue

HR

95% CI for HR


T category(T_{4} vs T_{1–3})

0.029

5.94

1.2–29.43

GTVnx D_{2%}

0.040

1.21

1.01–1.45

D_{max}

0.003

1.15

1.05–1.26

D_{1%}

0.003

1.16

1.05–1.28

D_{0.1cc}

0.003

1.16

1.05–1.27

D_{1cc}

0.006

1.15

1.04–1.27

 D _{2%} near the maximum absorbed dose of GTV_{nx}, D_{max} the maximum point dose of brainstem,
 D_{1%} the dose of 1% brainstem volume, D_{0.1cc} the maximum dose of brainstem delivered to a volume of 0.1 ml, D_{1cc} the maximum dose of brainstem delivered to a volume of 1.0 ml, GTVnx
 Gross tumor volume of nasopharyngeal primary lesions and their direct extensions
 Abbreviation: HR hazard ratio, CI confidence interval, GTV Gross tumor volume