Table 1. Characteristics of the 30 HNSCC patients (mean ± SD).
| Characteristics | Total (n=30) | Synchronous carcinoma group, SC (n=8) | Metachronous carcinoma group, MC (n=22) | P |
|---|---|---|---|---|
| Sex | 0.4399 | |||
| Male | 28 | 7 | 21 | |
| Female | 2 | 1 | 1 | |
| Age (years) | 57.17±7.18 | 59.25±5.65 | 56.00±7.50 | 0.2759 |
| Range (years) | 40–70 | 50–68 | 40–70 | |
| Primary cancer location | 0.0167 | |||
| Tongue | 10 | 1 | 9 | |
| Mouth floor | 6 | 1 | 5 | |
| Soft palate | 7 | 5 | 2 | |
| Lip | 1 | 1 | 0 | |
| Gingiva | 5 | 0 | 5 | |
| Larynx | 1 | 0 | 1 | |
| HNSCC stage | 0.3740 | |||
| Stage I | 10 | 2 | 8 | |
| Stage II | 7 | 1 | 6 | |
| Stage III | 8 | 4 | 4 | |
| Stage IV | 5 | 1 | 4 | |
| Radiotherapy | 0.5439 | |||
| Yes | 14 | 3 | 11 | |
| No | 16 | 5 | 11 |
HNSCC, head and neck squamous cell carcinoma; SD, standard deviation; SC, synchronous carcinoma; MC, metachronous carcinoma.