From: Profile of apoptotic proteins in oral squamous cell carcinoma: A cluster analysis of 171 cases
| Variables | Categories | Number of patients (%) |
|---|---|---|
| Age (years) | <= 56 | 117 (51.1) |
| >56 | 112 (48.9) | |
| Gender | Male | 194 (84.7) |
| Female | 35 (15.3) | |
| Tobacco smoking | No | 19 (8.3) |
| Yes | 182 (79.5) | |
| n/aa | 28 (12.2) | |
| Alcohol consumption | No | 45 (19.7) |
| Yes | 153 (66.8) | |
| n/a | 31 (13.5) | |
| T stage | T1/T2 | 131(57.2) |
| T3/T4a | 98 (42.8) | |
| Clinical Stage | I/II | 77 (33.6) |
| III/IV | 152 (66.4) | |
| Tumor site | Oral tongue | 122 (53.3) |
| Floor of mouth | 55 (24.0) | |
| Other | 52 (22.7) | |
| Lymph node metastasis (pN) | No | 92 (40.2) |
| Yes | 112 (48.9) | |
| n/a | 25 (10.9) | |
| Perineural infiltration | No | 129 (56.3) |
| Yes | 86 (37.6) | |
| n/a | 14 (6.1) | |
| Vascular invasion | No | 72 (31.4) |
| Yes | 141 (61.6) | |
| n/a | 16 (7.0) | |
| Histological grade | Well differentiated | 177 (77.3) |
| Moderately/poorly differentiated | 46 (20.1) | |
| n/a | 6 (2.6) | |
| Treatment | Surgery | 118 (51.5) |
| Surgery + Radiotherapy | 111 (48.5) |