Introduction: Colorectal cancer (CRC) is a commonly fatal cancer that ranks as third worldwide and third and the fifth in Iranian women and men, respectively. There are several methods for analyzing time to event data. Additive hazards regression models take priority over the popular Cox proportional hazards model if the absolute hazard (risk) change instead of hazard ratio is of primary concer...

BACKGROUND Randomized Controlled Trials almost invariably utilize the hazard ratio calculated with a Cox proportional hazard model as a treatment efficacy measure. Despite the widespread adoption of HRs, these provide a limited understanding of the treatment effect and may even provide a biased estimate when the assumption of proportional hazards in the Cox model is not verified by the trial da...

Survival analysis is a statistical method used to analyze data with time until the occurrence of certain event which commonly referred as "failure". One objectives survival determine effect predictor variables on time. The purpose this study was regression model and hazard ratio each factor that thought affect cervical cancer patients. results showed factors influence patients in their are stag...

The primary objective of this work was to investigate and compare the use of the Cox proportional hazards model and Aalen’s additive model in analysing survival data. Survival data from a study of 52 patients with advanced breast cancer was investigated using the Cox proportional hazards model. The model was optimized by examining different aspects by use of appropriate residual plots. Covariat...

conclusions by controlling the modifiable risk factors and modality of treatment in our study, physicians can reach more effective treatment. results at the end of the study, long-term graft failure was seen in 27 (10.2%) cases. one-year and 2-year graft survival after diagnosis of cancer were 93.6% and 91.7%, respectively. the univariate analysis showed that the incidence of chronic graft loss...

March 18, 2017 Type Package Title Estimation, Gene Selection, and Survival Prediction Based on the Compound Covariate Method Under the Cox Proportional Hazard Model Version 3.3 Date 2017-3-18 Author Takeshi Emura, Hsuan-Yu Chen, Yi-Hau Chen Maintainer Takeshi Emura Description Estimation, gene selection, and survival prediction based on the compound covariate method und...

BACKGROUND The relationship between impaired brachial flow-mediated dilation (FMD) and subsequent clinical cardiovascular events is not well established, especially in older adults whose FMD is often diminished. We assessed the hypothesis that FMD predicts incident cardiovascular events in a population-based cohort of older adults. METHODS AND RESULTS FMD was measured at the 1997 to 1998 Card...