Table 1.
AIC Statistics for 7 Parametric Survival Models and the Extended Excess Hazard Models with and without Cure, Fitted to the Grade 1/2 Group of the GBCS Data Set a
| Distribution | Standard Parametric | Excess Hazard (No Cure) | Excess Hazard (Cure) |
|---|---|---|---|
| Exponential | 874.6 (7) | 844.4 (7) | 846.5 (7) |
| Weibull | 843.2 (5) | 815.7 (5) | 812.3 (5) |
| Gompertz | 858.1 (6) | 829.3 (6) | 825.7 (6) |
| Gamma | 840.2 (3) | 812.8 (3) | 808.4 (3) |
| Log-logistic | 840.3 (4) | 813.2 (4) | 809.6 (4) |
| Log-normal | 835.4 (1) | 806.6 (2) | 804.9 (2) |
| Generalized Gamma | 837.3 (2) | 801.4 (1) | 803.4 (1) |
AIC, Akaike information criterion; GBCS, German Breast Cancer Study.
a
Rank order statistics are shown in parentheses. Note that AIC statistics are not directly comparable between excess hazard and standard parametric models.