نتایج جستجو برای: cox ph regression
تعداد نتایج: 510863 فیلتر نتایج به سال:
Transplantation is often the only viable treatment for pediatric patients with end-stage liver disease. Making well-informed decisions on when to proceed with transplantation requires accurate predictors of transplant survival. The standard Cox proportional hazards (PH) model assumes that covariate effects are time-invariant on right-censored failure time; however, this assumption may not alway...
Abstract Background and purpose: Asthma is one of the most common chronic diseases worldwide and its prevalence has increased over the past decades in industrialized and developing countries. Cox proportional hazards model is one of the main models used in the analysis of survival data. This study was performed to evaluate the Stratified cox model in identifying the factors influencing readm...
The value of D-dimer value, lactic acid levels, and the results blood gas analysis (PaO2, PCO2, PH, PaO2/FiO2) are prognostic factors for COVID-19 patients, although there is no agreement on optimum cut-off point specificity sensitivity. aim this study to examine as a prognosis patients with severe or critical COVID-19. This was retrospective medical records UGM Academic Hospital. Overall survi...
Nuclear waste repositories are being installed in deep excavated rock formations in some places in Europe to isolate and store radioactive waste. In France, the Callovo-Oxfordian formation (COx) is a possible candidate for nuclear waste storage. This work investigates the applicability of CeO(2)-based oxides (CeO(2), Ce(0.8)Sm(0.2)O(2) and Ce(0.8)Zr(0.2)O(2)) for monitoring the pH of the COx po...
Abstract We consider high‐dimensional inference for potentially misspecified Cox proportional hazard models based on low‐dimensional results by Lin and Wei (1989). A desparsified Lasso estimator is proposed the log partial likelihood function shown to converge a pseudo‐true parameter vector. Interestingly, sparsity of true can be inferred from that above limiting parameter. Moreover, each compo...
Background: Kidney transplantation had been evaluated in some researches in Iran mainly with clinical approach. In this research we evaluated graft survival in kidney recipients and factors impacting on survival rate. Artificial neural networks have a good ability in modeling complex relationships, so we used this ability to demonstrate a model for prediction of 5yr graft survival after ki...
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