Table 1 Baseline demographic and clinicopathological characteristics
Category | Number | Proportion |
|---|---|---|
Sex | ||
 Male | 67 | 54.9% |
 Female | 55 | 45.1% |
Age group | ||
 ≤60 | 46 | 37.7% |
 >60 | 76 | 62.3% |
Smoking status | ||
 Current | 51 | 41.8% |
 Never | 71 | 58.2% |
Alcohol use | ||
 Positive | 37 | 30.3% |
 Negative | 85 | 69.7% |
Chewing betel nuts | ||
 Current | 2 | 1.6% |
 Never | 120 | 98.4% |
Disease focus | ||
 Lower gingiva | 45 | 36.9% |
 Upper gingiva | 22 | 18.0% |
 Buccal mucosa | 55 | 45.1% |
Bone invasion | ||
 Maxilla | 23 | 18.9% |
 Mandible | 42 | 34.4% |
 Both | 11 | 9.0% |
 None | 46 | 37.7% |
Skin invasion | ||
 No | 115 | 94.3% |
 Yes | 7 | 5.7% |
Growth pattern of tumor | ||
 Exogenous | 29 | 23.8% |
 Ulceration type | 49 | 40.2% |
 Infiltrating type | 44 | 36.1% |
Clinical T distribution | ||
 T1 | 6 | 4.9% |
 T2 | 32 | 26.2% |
 T3 | 8 | 6.6% |
 T4a | 56 | 45.9% |
 T4b | 20 | 16.4% |
Clinical N distribution | ||
 N0 | 79 | 64.8% |
 N1 | 25 | 20.5% |
 N2a | 6 | 4.9% |
 N2b | 11 | 9.0% |
 N2c | 1 | 0.8% |
 N3 | 0 | 0.0% |
Clinical stage | ||
 I | 3 | 2.5% |
 II | 25 | 20.5% |
 III | 10 | 8.2% |
 IV | 84 | 68.8% |
Pathological T distribution | ||
 T1 | 4 | 3.3% |
 T2 | 30 | 24.6% |
 T3 | 12 | 9.8% |
 T4a | 55 | 45.1% |
 T4b | 21 | 17.2% |
Tumor invasion depth | ||
 ≤5 mm | 34 | 27.9% |
 5-10 mm | 46 | 37.7% |
 >10 mm | 42 | 34.4.% |
Pathological N distribution | ||
 N0 | 71 | 58.2% |
 N1 | 16 | 13.1% |
 N2a | 3 | 2.5% |
 N2b | 22 | 18.0% |
 N2c | 0 | 0.0% |
 N3a | 2 | 1.6% |
 N3b | 8 | 6.6% |
Histopathological differentiation | ||
 Well | 21 | 17.2% |
 Moderate | 95 | 77.9% |
 Poor | 6 | 4.9% |
Perineural invasion | ||
 Absence | 118 | 96.7% |
 Presence | 4 | 3.3% |
Extracapsular invasion | ||
 Absence | 109 | 89.3% |
 Presence | 13 | 10.7% |
Titanium plate implantation | ||
 No | 79 | 64.8% |
 Yes | 43 | 35.2% |
Adjuvant radiotherapy | ||
 No | 68 | 55.7% |
 Yes | 54 | 44.3% |
Concomitant chemoradiotherapy | ||
 No | 112 | 91.8% |
 Yes | 10 | 8.2% |