Table 4. Five-Year Survival Rates Stratified by the Evaluated Staging Systems and Applied to the NCDB Dataa.
| Disease Severityb | Staging System | |||||
|---|---|---|---|---|---|---|
| AJCC | FSSS | CSSS | ||||
| Stage | 5-Year Survival | Stage | 5-Year Survival | Stage | 5-Year Survival | |
| 1 | 1 | 95 (95.1-95.5) | α | 96 (95.9-96.3) | A | 94 (94.1-94.5) |
| 2 | 2 | 92 (91.5-92.7) | β | 80 (78.9-80.1) | B | 67 (65.9-68.3) |
| 3 | 3 | 89 (88.5-89.7) | γ | 57 (54.8-59.8) | C | 45 (40.1-50.3) |
| 4 | 4 | 74 (73.1-75.5) | NA | NA | NA | NA |
Abbreviations: AJCC, The American Joint Committee on Cancer; CSSS, clinical severity staging system; FSSS, functional severity staging system; NA, not applicable; NCDB, National Cancer Database.
a
Data reported as survival rate (95% CI) in percentages.
b
The higher the number, the greater the disease severity.