نتایج جستجو برای: specific hazard approach

تعداد نتایج: 2254161  

Journal: :journal of biostatistics and epidemiology 0
mostafa hosseini department of epidemiology and biostatistics, school of public health and institute of public health research, tehran university of medical science, tehran, iran marziye asgari 2 department of epidemiology and biostatistics, school of public health and institute of public health research, tehran university of medical science, tehran, iran mahmood mahmoodi 1 department of epidemiology and biostatistics, school of public health and institute of public health research, tehran university of medical science, tehran, iran iraj najafi department of nephrology, shariati hospital, tehran university of medical sciences, tehran, iran

b a c k g r o u n d & aim: in many studies, the survival of patients with chronic kidney disease who are treated with peritoneal dialysis technique has been considered, while this is possible in peritoneal dialysis  patients  to switch  to another  treatment.  to achieve  more  accurate  estimation  of patient survival is necessary to examine all events. the purpose of this study is to estimate...

Journal: :گوارش 0
elnaz saeedi mohsen nasiri toosi masoud salehi saeede khosravi bizhaem jamileh abolghasemi

background: including multivariate survival data can be pointed competing risks data. there are various methods to analyze such data such as semi-parametric methods of cause-specific hazard function, and cumulative incidence function. the aim of this study was to deploy competing risks model to analyze the determinants of patients with liver cirrhosis. materials and methods: during the one-year...

Journal: :journal of biostatistics and epidemiology 0
maryam nazemipour department of epidemiology and biostatistics, school of public health, international campus, tehran university of medical sciences, tehran, iran abdol-mohammad kajbafzadeh pediatric urology research center, department of pediatric urology, children’s hospital medical center, tehran university of medical sciences, tehran, iran kazem mohammad department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran abbas rahimi foroushani department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran maryam seyedtabib department of epidemiology and biostatistics, school of public health, hamadan university of medical sciences, hamadan, iran ali nazemipour department of computer engineering, sharif university of technology, tehran, iran

background & aim: we aimed to describe a standard survival analysis, so that we can analyze some factors related to the time of occurrence of different types of reflux (unilateral-left, unilateralright, and bilateral) in children with antenatal hydronephrosis (anh) and to provide an approach taking competing risks into account. methods & materials: we used data of 193 children that was collecte...

Ali Raoof Mehrpoor Masoud N. Ahari

Recorded ground motions in near fault region have completely distinct nature from others that recorded in far field of the fault. Near source outcomes cause much of the seismic energy to appear in a single large and long period pulse at the beginning of the velocity record. Assaluyeh complex is located near the reverse Assaluyeh fault that is a segment of Mountain Front Fault. This complex cont...

Journal: :Austrian Journal of Statistics 2018

, , Abbasi, Mohammad, Khazaei, Salman, Roshanaei, Ghodratollah, Safari, Malihe ,

Background and Objectives: The incidence of rectal cancer is increasing in developing societies, especially in younger age groups. The aim of this study was to evaluate the factors affecting the survival of patients with rectal cancer in the presence of competing risks.   Methods: In this retrospective cohort study, the data of 121 patients with rectal cancer during 2001-2017 were studied. De...

Journal: :Environmental toxicology and pharmacology 2004
Nickolette Roney Joan Colman

This interaction profile discusses and evaluates the evidence for joint toxic action among lead, manganese, zinc, and copper. The interaction profile recommends how to incorporate concerns about possible interactions or additivity into public health assessments of hazardous waste sites where people might be exposed to mixtures of these chemicals. The profile recommends using endpoint-specific h...

Journal: :Applied sciences 2021

Permanent ground displacements/deformations caused by earthquakes can seriously challenge the safety of nuclear power plants. The state-of-the-art hazard analysis methods provide a fault displacement curve, i.e., annual probability given measure will be exceeded. evaluation requires great effort, empirical evidence, and sufficient data for characterization activity capability to cause permanent...

Journal: :Nucleation and Atmospheric Aerosols 2021

Bengkulu City is an area in Indonesia that has a high seismic intensity. This very vulnerable to undergo earthquakes. Therefore, there necessity study the hazard assessment this area. paper presents vulnerability based on ground response analysis combined with probabilistic assessment. The soil profiles around are investigated using geophysical survey by microtremor and analysis. motion of soft...

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