Table 2. Five-year overall survival (OS), disease specific survival (DSS) and disease-free survival (DFS) according to subsite and T-status among 1,616 patients with laryngeal squamous cell carcinoma.
| Overall | Glottic | Supraglottic | Subglottic | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % | 95% CI | % | 95% CI | % | 95% CI | % | 95% CI | |||||
| OS | 56.8 | 54.2 | 59.2 | 64.0 | 61.0 | 66.8 | 38.8 | 34.0 | 43.5 | 51.2 | 36.5 | 64.2 |
| T1 | 71.0 | 67.2 | 74.4 | - | - | 40.0 | 27.7 | 52.0 | - | - | - | |
| T1a | - | - | - | 75.7 | 71.7 | 79.2 | - | - | - | - | - | - |
| T1b | - | - | - | 68.4 | 51.7 | 80.3 | - | - | - | - | - | - |
| T2 | 59.2 | 54.0 | 64.0 | 64.5 | 58.1 | 70.2 | 47.0 | 37.5 | 55.9 | - | - | - |
| T3 | 39.2 | 32.6 | 45.8 | 36.7 | 28.3 | 45.1 | 42.9 | 31.8 | 53.5 | - | - | - |
| T4 | 37.4 | 32.2 | 42.7 | 43.0 | 35.0 | 50.9 | 30.3 | 23.4 | 37.5 | - | - | - |
| DSS | 80.2 | 78.0 | 82.2 | 87.0 | 84.8 | 89.0 | 61.6 | 56.3 | 66.4 | 81.2 | 66.8 | 89.8 |
| T1 | 94.9 | 92.7 | 96.4 | - | - | - | 69.5 | 54.0 | 80.7 | - | - | - |
| T1a | - | - | - | 98.1 | 96.3 | 99.0 | - | - | - | - | - | - |
| T1b | - | - | - | 90.1 | 75.6 | 96.2 | - | - | - | - | - | - |
| T2 | 84.5 | 80.0 | 88.1 | 87.0 | 81.6 | 91.0 | 77.8 | 67.6 | 85.1 | - | - | - |
| T3 | 65.5 | 58.1 | 71.9 | 67.9 | 58.1 | 75.8 | 60.5 | 47.7 | 71.0 | - | - | - |
| T4 | 54.3 | 48.5 | 59.8 | 59.9 | 51.0 | 67.8 | 47.6 | 39.3 | 55.4 | - | - | - |
| DFS | 48.1 | 45.5 | 50.5 | 54.5 | 51.4 | 57.4 | 32.0 | 27.6 | 36.6 | 43.9 | 29.9 | 57.0 |
| T1 | 64.3 | 60.3 | 67.9 | - | - | - | 37.3 | 25.3 | 49.3 | - | - | - |
| T1a | - | - | - | 69.1 | 64.9 | 72.9 | - | - | - | - | - | - |
| T1b | - | - | - | 52.5 | 36.4 | 66.3 | - | - | - | - | - | - |
| T2 | 44.6 | 39.4 | 49.6 | 47.2 | 40.8 | 55.3 | 38.4 | 29.3 | 47.4 | - | - | - |
| T3 | 24.3 | 18.7 | 30.3 | 23.0 | 15.9 | 30.8 | 25.4 | 16.4 | 35.3 | - | - | - |
| T4 | 35.7 | 31.0 | 41.0 | 41.1 | 33.0 | 49.0 | 28.6 | 21.8 | 35.7 | - | - | - |