Background: In Iran, cancer kills 30,000 people, annually. The epidemiology of cancer is gradually changing as a result of the demographic and epidemiological transition in Iran. This study aimed at presenting a geographical distribution of cancer mortality in Southeast area of Iran, and comparing proportional mortality and age-adjusted mortality rates. Methods: The present study was a descrip...

Many populations encountered in survival analysis are often not homogeneous. Individuals are flexible in their susceptibility to causes of death, response to treatment and influence of various risk factors. Ignoring this heterogeneity can result in misleading conclusions. To deal with these problems, the proportional hazard frailty model was introduced. In this paper, the frailty model is ex...