Variable

Median OS (95% CI) (months)

p-value

Age (years)

≥60

18 (5.47 - 30.52)

<0.0001*

Consultation delay (months)

7 - 12

49 (42.73 - 55.26)

0.032*

>12

30 (20.79 - 39.20)

<0.0001*

Tumor size

T3

35 (50.00 - 73.99)

0.006*

T4

18 (9.39 - 26.60)

<0.0001*

Lymph node metastasis (N)

N2

50 (47.31 - 52.68)

<0.0001*

N3

24 (14.65 - 33.93)

<0.0001*

Distant Metastasis (M)

yes

30 (17.12 - 42.85)

0.041*

Stage

III

50 (47.24 - 52.75)

0.002*

IV

20 (10.70 - 29.29)

<0.0001*

Treatment

Palliative chemotherapy

24 (15.31 - 32.68)

<0.001*

Type of radiotherapy

Conformational

44 (38.13 - 49.86).

<0.001*

Radiation therapy dose

≥65 Gy

51 (45.05 - 56.94)

<0.001*

Staggered radiotherapy

≥6 weeks

51 (45.42 - 56.57)

<0.001*

Chemotherapy protocol

CDDP + Doxoribucin

88 (15.0 - 161)

0.027*