Table 5 Survival analysis for patients presenting with regional disease

Nasopharynx

1

Ref

1

Ref

Salivary gland

1.07 (0.75–1.53)

0.713

1.02 (0.68–1.52)

0.937

Tonsil

1.01 (0.75–1.37)

0.923

1.22 (0.88–1.69)

0.233

Lung and bronchus

1.71 (1.05–2.80)

0.031

1.72 (1.03–2.88)

0.038

Urinary bladder

1.96 (1.19–3.20)

0.008

1.62 (0.95–2.76)

0.075

Female genital system

0.67 (0.28–1.63)

0.383

1.09 (0.439–2.73)

0.084

Digestive system

2.03 (1.01–4.1)

0.048

2.05 (0.99–4.23)

0.051