Factor | Â | LRFS | RRFS | LRRFS | |||
---|---|---|---|---|---|---|---|
n | 2 years % | p-value | 2 years % | p-value | 2 years % | p-value | |
Gender | |||||||
 Male | 59 | 45.2 | 0,2713 | 52.3 | 0,0527 | 36.2 | 0,1562 |
 Female | 6 | 83.0 |  | 100.0 |  | 83.3 |  |
Age (years) | |||||||
 ≤ 50 | 20 | 49.3 | 0,7046 | 42.3 | 0,3524 | 30.7 | 0,6735 |
 > 50 | 45 | 48.2 |  | 63.2 |  | 44.8 |  |
Performance status (ECOG) | |||||||
 0 | 44 | 62.8 | 0,0004 | 68.3 | 0,0169 | 54.7 | 0,0004 |
 1 | 21 | 19.2 |  | 20.8 |  | 9.8 |  |
Cigarette smoking | |||||||
 Non-smokers | 11 | 77.7 | 0,1651 | 89.8 | 0,0365 | 79.9 | 0,0475 |
 Current smokers | 54 | 43.2 |  | 49.8 |  | 33.8 |  |
Alcohol consumption | |||||||
 Non-drinkers | 25 | 71.8 | 0,0163 | 75.3 | 0,0222 | 64.7 | 0,0094 |
 Current drinkers | 40 | 34.8 |  | 47.2 |  | 27.2 |  |
Subsite | |||||||
 Tonsil | 36 | 42.8 | 0,3656 | 58.7 | 0,7991 | 37.8 | 0.4509 |
 Base of tongue | 21 | 66.7 |  | 54.7 |  | 45.9 |  |
 Soft palate | 6 | 49.2 |  | 50.2 |  | 50.9 |  |
 Posterior pharyngeal wall | 2 | 0 |  | 0 |  | 0 |  |
T stage | |||||||
 T2-3 | 47 | 54.0 | 0,1094 | 58.8 | 0,9960 | 49.1 | 0,0451 |
 T4 | 18 | 35.4 |  | 48.1 |  | 21.6 |  |
N stage | |||||||
 N0-1 | 34 | 68.8 | 0.0006 | 93.8 | <0.0001 | 66.6 | <0.0001 |
 N2-3 | 31 | 28.3 |  | 22.2 |  | 16.4 |  |
Overall stage | Â | Â | Â | Â | Â | Â | Â |
 III | 23 | 81.7 | 0.0002 | 95.3 | <0.0001 | 81.6 | <0.0001 |
 IVA-B | 42 | 30.8 |  | 33.2 |  | 19.1 |  |
Histological differentiation | |||||||
 Well | 22 | 57.2 | 0,1931 | 59.2 | 0,1385 | 44.1 | 0,2296 |
 Moderate | 25 | 54.3 |  | 76.3 |  | 54.7 |  |
 Poor | 18 | 31.8 |  | 36.3 |  | 23.4 |  |
Haemoglobin level | |||||||
 ≤ 12.5 g/dL | 20 | 21.3 | <0.0001 | 44.2 | 0,0046 | 19.0 | <0.0001 |
 > 12.5 g/dL | 45 | 60.1 |  | 65.8 |  | 51.5 |  |