نتایج جستجو برای: cox hazard proportional model 1 corresponded author
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Background & Objectives: Cox regression model is one of the statistical methods in survival analysis. The use of smoothing techniques in Cox model makes the more accurate estimates for the parameters. Fractional polynomial is one of these techniques in Cox model. The aim of this study was to assess the effects of prognostic factors on survival of patients with gastric cancer using the fractiona...
Persson, I. 2002. Essays on the Assumption of Proportional Hazards in Cox Regression. Acta Universitatis Upsaliensis. Comprehensive Summaries of Uppsala Dissertations from the Faculty of Social Sciences 110. 36 pp. Uppsala. ISBN 91-554-5208-6. This thesis consists of four papers about the assumption of proportional hazards for the Cox model in survival analysis. The first paper compares the haz...
Stroke adalah penyakit yang disebabkan oleh terhentinya suplai darah ke otak menyebabkan kehilangan fungsinya. terjadi ketika pembuluh di tersumbat, mengakibatkan tidak mendapatkan oksigen cukup untuk membawa seluruh tubuh, kematian sel/jaringan. Faktor risiko stroke dapat dipengaruhi usia, jenis kelamin, dan faktor akibat perilaku sehat seperti hipertensi, diabetes. Berbagai diduga mempengaruh...
Background and Aims: In recent years, dental implants have received special attention in dentistry. Due to the remarkable success of predictable dental implants, there is growing interests in the scientific community from descriptions of implant success toward identify factors associated with implant failure. The purpose of this study was to identify the risk factors associated with implant f...
Cox proportional hazards model is a commonly used model in providing hazard ratio to compare survival times of two population groups. The exponentiated linear regression part of the model describes the effects of explanatory variables on hazard ratio. PROC PHREG is a SAS procedure that implements the Cox model and provides the hazard ratio estimate. The estimate is interpreted as the percent ch...
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