frailty models
Relative stochastic comparisons of additive frailty models
... This article is devoted to the proposal of two relative stochastic orders namely the relative hazard rate and relative mean residual life orders. These stochastic orders are applied to provide some stochastic comparisons ...
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A comprehensive analysis on child mortality and its determinants in Bangladesh using frailty models
... our frailty models suggest that the effects of unmeasured family and community level fac- tors are likely to be important for child mortality in Bangladesh, specially the mother level frailty model ...
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Family history of the cancer on the survival of the patients with gastrointestinal cancer in northern Iran, using frailty models
... is frailty model. A frailty is an unobserved random effect shared by sub- jects within a ...sub-group. Frailty models are also used to capture the overdispersion in univariate survival ...the ...
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Modeling time-to-cure from severe acute malnutrition: application of various parametric frailty models
... metric frailty models using the same ...(multivariate frailty case). The frailty model, introduced in the statistical literature by Vaupel et ...so-called frailty that acts ...
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Parametric frailty models for clustered data with arbitrary censoring: application to effect of male circumcision on HPV clearance
... parametric frailty models to explore treatment effect's on survival when data are clus- tered and subject to arbitrary ...of models are parametric proportional hazards frailty model and ...
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Survival analysis of under-five mortality using Cox and frailty models in Ethiopia
... However, this model also has its disadvantages. The main disadvantage is that hazards are calculated using the ranks of covariate values because the models are semi- parametric. For this reason, quantitative ...
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A nonparametric visual test of mixed hazard models
... Gamma frailty survival model is working well also for smaller data sets, where bigger fluctuations are to be ...Gamma frailty survival model also fits relatively well, but now with deviances up to five ...
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pst.1821.pdf
... In the analysis of time to event data, noninformative or independent censoring is commonly assumed. This assumption is analogous to the MAR assumption in the analysis of longitudinal data. It is well known that this ...
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An overview of osteoporosis and frailty in the elderly
... There are some studies using derivations of the phenotype model or other categorical frailty models to measure the degree of frailty. Results from the comparisons between them and the original ...
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Identification of different malaria patterns due to Plasmodium falciparum and Plasmodium vivax in Ethiopian children: a prospective cohort study
... ate frailty models were applied (using time‑to‑first malaria episode data and time‑to‑recurrent malaria episode data), allowing the estimation of adjusted hazard ratios (AHR) of potential risk factors ...
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biom.13085.pdf
... a frailty to account for informative ...semiparametric frailty models consist of three submodels: (a) a logistic regression model for the probability such that a subject belongs to the nonsusceptible ...
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A proposal for a self rated frailty index and status for patient oriented research
... of frailty and the important com- ponents had not been sufficiently ...the frailty models could be investi- gated for the usefulness of the subjective ...
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Determinant of time-to-first birth interval after marriage among Ethiopian women
... survival frailty models in order to investigate the determinant factors of time-to- first birth after marriage among Ethiopian women, based EDHS 2011 data ...
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Joint Survival Model of CD4 Outcome for HIV/TB Coinfected: Data from Kenya AIDS Indicator Survey
... Frailty models explain the effects of the unobserved covariates in a proportional hazard model ...PH models giving a suitable method to introduce random effects, associations, and unobserved ...
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Frailty and acute coronary syndrome: A structured literature review
... identifies frailty on the basis of five physical characteristics: weight loss; exhaustion; low energy expenditure; slow gait speed; and reduced grip ...identifies frailty on the basis of a range of ...
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Depression and frailty in later life: a systematic review
... Abstract: Frailty and depression are important issues affecting older ...from frailty in advanced old ...between frailty and depressive symptomatology with either syndrome as the outcome, moderators ...
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Frailty and post-operative outcomes in older surgical patients: a systematic review
... that frailty is associated with in- creased mortality and morbidity in the older surgical pa- ...surgery, frailty assessment may have con- siderable value as a tool for peri-operative ...of frailty ...
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The prevalence and characteristics of frailty by frailty phenotype in rural Tanzania
... In the original Fried paper, older adults with certain clinical characteristics were excluded because their diag- noses may confound the results, by mimicking frailty [1]. For example, those with a history of ...
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Effect of 24-month physical activity on cognitive frailty and the role of inflammation: the LIFE randomized clinical trial
... cognitive frailty, indi- cating that the effect of intervention was not influenced by underlying ...cognitive frailty, despite prior beliefs established on the basis of evidence on cognition and/or ...
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Diagnostic Accuracy of Frailty Screening Methods in Advanced Chronic Kidney Disease
... to frailty [2]. The prevalence of frailty increases with worsening kidney function, with a report categorising as many as two thirds of dialysis- dependent CKD patients as frail ...
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