Variables | n (%) | DFS | OS | DSS | ||||
---|---|---|---|---|---|---|---|---|
5-y (%) | P | 5-y (%) | P | 5-y (%) | P | |||
All | 124 | 58.5 | 61.1 | 68.4 | ||||
Mean age, year | ≤ 60 | 60.7 ± 12.0a | 59.3 | 0.766b | 61.9 | 0.940b | 63.8 | 0.286b |
> 60 | 53.3 | 58.2 | 79.1 | |||||
Sex | Female | 17 (13.7) | 61.8 | 0.830b | 61.8 | 0.921b | 67.7 | 0.926b |
Male | 107 (86.3) | 57.5 | 61.4 | 70.6 | ||||
Subsite | Base of tongue | 94 (75.8) | 57.6 | 0.807b | 63.4 | 0.829b | 68.7 | 0.756b |
Soft palate | 22 (17.7) | 36.4 | 40.4 | 80.8 | ||||
Tonsil | 6 (4.8) | 66.7 | 66.7 | 66.7 | ||||
Pharyngeal walls | 2 (1.6) | 100 | 100 | 100 | ||||
T stage | T1 | 15 (12.1) | 73.3 | 0.421b | 86.7 | 0.024b | 86.7 | 0.018b |
T2 | 36 (29.0) | 55.2 | 62.4 | 72.8 | ||||
T3 | 46 (37.1) | 52.8 | 50.1 | 55.7 | ||||
T4 | 27 (21.8) | 63.3 | 76.7 | 85.2 | ||||
N stage | N0 | 76 (61.3) | 61.9 | 0.003b | 62.8 | 0.712b | 70.8 | 0.749b |
N1 | 28 (22.3) | 55.9 | 49.0 | 54.8 | ||||
N2 | 16 (12.9) | 60.0 | 71.4 | 71.4 | ||||
N3 | 4 (3.2) | 25.0 | 50.0 | 50.0 | ||||
SND | I-III | 62 (50.0) | 55.0 | 0.914b | 58.9 | 0.778b | 74.0 | 0.290b |
I-IV | 62 (50.0) | 60.1 | 61.5 | 64.8 | ||||
DOI, mm | ≤ 5 | 21 (16.9) | 63.0 | 0.546b | 62.1 | 0.864b | 62.1 | 0.666b |
5 < DOI ≤ 10 | 30 (24.2) | 40.6 | 51.7 | 64.6 | ||||
> 10 | 73 (58.9) | 62.3 | 65.8 | 72.1 | ||||
Histologic grade | Well | 62 (50.0) | 56.8 | 0.871b | 62.0 | 0.531b | 69.2 | 0.768b |
Moderate | 54 (43.5) | 50.0 | 68.2 | 70.2 | ||||
Poor | 8 (6.5) | 75.0 | 75.0 | 75.0 | ||||
LVI | Yes | 14 (11.3) | 50.0 | 0.786b | 65.0 | 0.600b | 75.0 | 0.673b |
No | 110 (88.7) | 59.5 | 45.2 | 68.0 | ||||
PNI | Yes | 20 (16.1) | 70.0 | 0.646b | 80.0 | 0.524b | 80.0 | 0.783b |
No | 104 (83.9) | 56.2 | 59.0 | 69.5 | ||||
Radiotherapy | Yes | 61 (49.2) | 63.9 | 0.421b | 70.8 | 0.235b | 75.5 | 0.415b |
No | 63 (50.8) | 53.8 | 57.6 | 66.4 | ||||
Chemoradiotherapy | Yes | 20 (16.1) | 44.0 | 0.071b | 26.8 | 0.019b | 26.8 | 0.005b |
No | 104 (83.8) | 61.4 | 70.8 | 79.9 |