This paper proposes a general latent variable approach to discrete-time survival analysis of non-repeatable events such as onset of drug use. It is shown how the survival analysis can be formulated as a generalized latent class analysis of event history indicators. The latent class analysis can use covariates and can be combined with the joint modeling of other outcomes such as repeated measure...

The medical literature of the last decade enables us to estimate survival of diabetics. Insulin dependent diabetic (IDDM) present a 3 to 6-fold mortality and die after age 30, the most frequent causes being end stage renal and vascular diseases. Non insulin-dependent diabetic (NIDDM) mortality is 1.4 to 3.7 times that of non-diabetics. Cardiovascular events and strokes are the major causes of d...

Generally, a search usually isn’t commenced until a boat is overdue for more than 24hours. Fortunately for the passengers and crew of the fishing boat “COUGAR”, which sunk 13°C (56°F) water, 35 miles off the coast of Oregon in September 1998, the absence of a normally punctilious individual, Capt Liddell, from a meeting raised the alarm and triggered the search. He, along with five others, was ...

Background: Increasing the complexity in modern radiotherapy techniques have increased the delivery time lowering consequently the treatment efficacy. Through simulating the delivery time delay encountered in such techniques, its’ effect on two cancer cell lines and the compensating doses given to prevent such effect was investigated. Materials and Methods: F10B16 and 4T1 cancer cell line...

background: one substantial part of microarray studies is to predict patients’ survival based on their gene expression profile. variable selection techniques are powerful tools to handle high dimensionality in analysis of microarray data. however, these techniques have not been investigated in competing risks setting. this study aimed to investigate the performance of four sparse variable selec...

Abstract Introduction: Survival after cardiac arrest is one of the most important issues related to the safety and quality of patient care, and unexpected events such as failure to follow guidelines can endanger the patient's safety. Objective: This study aimed to determine the long-term survival after cardiopulmonary resuscitation and its predictors in patients with cardiac arrest. Materi...

background: the occurrence and the mortality related to breast cancer (bc) in iranian female population has increased over time. although there are many studies on bc and related risk factors, however, the epidemiological aspects of this melanoma in iranian females are uncertain. therefore, the aim of this study was to determine the relationship between demographical and clinical factors on the...