نتایج جستجو برای: cox proportional hazards model

تعداد نتایج: 2194121  

Journal: :Mathematical and Computer Modelling 2001

As customers are the main asset of any organization, customer churn management is becoming a major task for organizations to retain their valuable customers. In the previous studies, the applicability and efficiency of hierarchical data mining techniques for churn prediction by combining two or more techniques have been proved to provide better performances than many single techniques over a nu...

2002
INGER PERSSON

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...

Journal: :acta medica iranica 0
ramin ravangard department of health management and economics, school of public health, tehran university of medical sciences, tehran, iran. mohamad arab department of health management and economics, school of public health, tehran university of medical sciences, tehran, iran. arash rashidian department of health management and economics, school of public health, tehran university of medical sciences, tehran, iran. ali akbarisari department of health management and economics, school of public health, tehran university of medical sciences, tehran, iran. ali zare department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran. hojjat zeraati department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran.

survival analysis is a set of methods used for analysis of the data which exist until the occurrence of an event. this study aimed to compare the results of the use of the semi-parametric cox model with parametric models to determine the factors influencing the length of stay of patients in the inpatient units of women hospital in tehran, iran. in this historical cohort study all 3421 charts of...

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