نتایج جستجو برای: accelerated failure time aft model

تعداد نتایج: 3915811  

Journal: :Journal of reliability and statistical studies 2023

The objective of this study is to determine the significant predictors endometrial cancer using accelerated failure time models (AFTM). We have demonstrated applications AFTM viz. Exponential, Weibull, Log-normal, Log-logistic, Gompertz, Gamma and Generalized AFTM, as an alternative Cox proportional hazard model. Data for analysis was collected from Acharya Harihar Post Graduate Institute Cance...

Journal: :Gait & posture 2013
Katherine M Steele Ajay Seth Jennifer L Hicks Michael H Schwartz Scott L Delp

The goals of this study were to determine if the muscle contributions to vertical and fore-aft acceleration of the mass center differ between crouch gait and unimpaired gait and if these muscle contributions change with crouch severity. Examining muscle contributions to mass center acceleration provides insight into the roles of individual muscles during gait and can provide guidance for treatm...

2011
Yichuan Zhao

Accelerated failure time (AFT) models are useful regression tools to study the association between a survival time and covariates. Semiparametric inference procedures have been proposed in an extensive literature. Among them, Fygenson and Ritov (1994) proposed an estimating equation which is monotone in the regression parameter and has some excellent properties. However, there exists a serious ...

اصغری جعفرآبادی, محمد, حاجی زاده, ابراهیم, فاطمی, سید رضا, کاظم نژاد, انوشیروان,

Background & Objectives: Cholera is always being considered as a public health threat in poor and developing countries. However outbreaks of cholera are not very common in central area of Iran in 2008 district health authority reported a cluster of diarrhea cases. We investigated this cluster to identify the etiological agent, source of transmission and propose control measures. Methods: We ...

ژورنال: اندیشه آماری 2020
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Life testing often is consuming a very long time for testing. Therefore, the engineers and statisticians are looking for some approaches to reduce the running time. There is a recommended method for reducing the time of failure, such that the stress level of the test units will increase, and then they will fail earlier than normal operating conditions. These approaches are called accelerated li...

Amirhossein Amiri Azam Goodarzi Shervin Asadzadeh

Improving the product reliability is the main concern in both manufacturing and service processes which is obtained by monitoring the reliability-related quality characteristics. Nowadays, products or services are the result of processes with dependent stages referred to as multistage processes. In these processes, the quality characteristic in each stage is affected by the quality characterist...

Akbarpour, Ensieh, Kashi, Zahra , Mohammadpour Tahamtan, Rezaali, Yazdani Charati, Jamshid,

Background and purpose: The aim of this study was to identify the factors affecting the progression of retinopathy in patients with type 2 diabetes. Materials and methods: In this historical prospective cohort study, 728 patients with type 2 diabetes, attending Sari Tooba Clinic, were followed up for retinopathy. Data analysis was performed using accelerated failure time Weibull regression mod...

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