Table 1 Clinicopathological characteristics of laryngeal cancer patients
| Characteristics | No. of patients (%) |
|---|---|
| Gender | |
| Male | 197 (96.6) |
| Female | 7 (3.4) |
| Age, years | |
| Mean | 60.75 |
| SD | 9.64 |
| Differentiation | |
| Well/moderate | 187 (91.7) |
| Poor/undifferentiation | 17 (8.30) |
| Tumor invasion | |
| T1 | 61 (29.9) |
| T2 | 70 (34.3) |
| T3 | 57 (27.9) |
| T4 | 16 (7.8) |
| TNM stage | |
| I | 56 (27.5) |
| II | 35 (17.2) |
| III | 74 (36.3) |
| IV | 39 (19.1) |
| Lymph node metastasis (LNM) | |
| Yes | 66 (32.4) |
| No | 138 (67.6) |
| Smoking history | |
| Yes | 141 (69.1) |
| No | 63 (30.9) |
| Pack-years | |
| ≤30 | 149 (73.0) |
| >30 | 55 (27.0) |
| Survival status | |
| Dead | 113 (55.4) |
| Alive | 91 (44.60) |