Abstract Named after Clio, the Greek goddess of history, cliophysics is a daughter (and in sense an extension) econophysics. Like econophysics it relies on methodology experimental physics. Its purpose to conduct scientific analysis (recurrent) historical events. Such events can be sociological, political or economic nature. In this last case would coincide with The main difference between and ...

The competing risks too arise when one type of event may affect the probability of occurrence of other events. Some authors have made important contributions in this area of research, multistate multivariate models have been proposed. Varieties of record are frequently encountered in areas as medicine, engineering, sociology, biology, social science, among others. Classical survival analysis mo...

A 40-year-old man was transferred to our hospital in March 1994 for gross hematuria and decreased urine output. The patient exhibited chest pain and shortness of breath 2 weeks prior to the initial visit. These symptoms were relieved without particular management. Fever and chills developed thereafter followed by abdominal pain. The patient visited a local clinic and was managed for acute pancr...

This article is concerned with the analysis of recurrent events in the presence of a terminal event such as death. We consider the mean frequency function, defined as the marginal mean of the cumulative number of recurrent events over time. A simple nonparametric estimator for this quantity is presented. It is shown that the estimator, properly normalized, converges weakly to a zero-mean Gaussi...

In clinical research, outcomes of interest often recur in the same patient. Examples include asthma attacks, urinary-tract infections, migraines, injuries, seizures in epileptics, and admissions to a hospital. Examples in cancer research include recurrent mammary tumors (1), skin cancers (2), and fractures in patients with cancer metastatic to bone (3). However, appropriate statistical methods ...