Factors influencing survival time of hemodialysis patients; time to event analysis using parametric models: a cohort study

Table 4 Assessment of the quality of the fitted event-time models using AIC criterion

Parametric Model	Log likelihood (Null)	Log likelihood (Model)	AIC Criterion
Cox PH model	− 1145.77	−1120.26	2258.52
PH Gompertz	− 396.56	− 370.91	763.82
AFT weibull	−370.28	− 341.46	704.92
AFT Lognormal	− 343.49	− 321.53	665.06
AFT Loglogistic	− 350.85	− 327.06	676.13

Abbreviations: AIC Akaike Information Criterion, AFT accelerated failure time, PH proportional hazard

ISSN: 1471-2369