نتایج جستجو برای: multistate model

تعداد نتایج: 2105559  

2005

In this paper, we study a monotone process maintenance model for a multistate system with k working states and failure states. By making different assumptions, we can apply the model to a multistate deteriorating system as well as to a multistate improving system. We show that the monotone process model for a multistate system is equivalent to a geometric process model for a two-state system. T...

Journal: :Physics Letters A 2020

2017
Christy Cassarly Renee' H Martin Marc Chimowitz Edsel A Peña Viswanathan Ramakrishnan Yuko Y Palesch

Historically, ordinal measures of functional outcome have been dichotomized for the primary analysis in acute stroke therapy trials. A number of alternative methods to analyze the ordinal scales have been proposed, with an emphasis on maintaining the ordinal structure as much as possible. In addition, despite the availability of longitudinal outcome data in many trials, the primary analysis con...

Irina V. Sagalaeva Ksenia A. Strakhova Marina N. Klochkova Natalya L. Gusakova Oksana P. Riadinskaia

This article concerns the general functional features of an adjective in modern English, and in particular multistate lexical item “just”, which carries different meanings in different variants of combinatorics. The authors analyze the combinations used with the adjectival lexeme item “just” and reveal the categories that determine the degree of semantic content of each given statement. The nee...

2017
Sean Yiu Brian Tom

Multistate processes provide a convenient framework when interest lies in characterising the transition intensities between a set of defined states. If, however, there is an unobserved event of interest (not known if and when the event occurs), which when it occurs stops future transitions in the multistate process from occurring, then drawing inference from the joint multistate and event proce...

Journal: :Biometrical journal. Biometrische Zeitschrift 2012
Jean-François Coeurjolly Moliere Nguile-Makao Jean-François Timsit Benoit Liquet

Attributable risk has become an important concept in clinical epidemiology. In this paper, we suggest to estimate the attributable risk of nosocomial infections using a multistate approach. Recently, a multistate model (called progressive disability model in the literature) has been developed in order to take into consideration both the time-dependency of the risk factor (e.g., nosocomial infec...

Journal: :international journal of hematology-oncology and stem cell research 0
arash jalali department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran ; hematology-oncology and stem cell transplantation research center, tehran university of medical sciences, tehran, iran. kamran alimoghaddam hematology-oncology and stem cell transplantation research center, tehran university of medical sciences, tehran, iran. mahmood mahmoudi department of epidemiology and biostatistics, school of public health, 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. hojjat zeraati department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran. seied asadollah mousavi hematology-oncology and stem cell transplantation research center, tehran university of medical sciences, tehran, iran.

the aim of this study was to assess the predictive effect of the ebmt risk score on the outcomes of allogeneic stem cell transplantation in a relatively homogenous group of acute myelogenous leukemia (aml) patients regarding the occurrence of acute and chronic graft versus host disease (gvhd). this historical cohort study included adult patients (≥ 15 years old) with aml (n=363) who received al...

2002
J. D. LEBRETON

Multistate capturerecapture models are a natural generalization of the usual one-site recapture models. Similarly, individuals are sampled on discrete occasions, at which they may be captured or not. However, contrary to the one-site case, the individuals can move within a ® nite set of states between occasions. The growing interest in spatial aspects of population dynamics presently contribute...

Journal: :Mathematical biosciences 1989
H Inaba

The weak ergodic theorems of mathematical demography state that the age distribution of a closed population is asymptotically independent of the initial distribution. In this paper, we provide a new proof of the weak ergodic theorem of the multistate population model with continuous time. The main tool to attain this purpose is a theory of multiplicative processes, which was mainly developed by...

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