Results 241 to 250 of about 2,925,819 (300)

Social Media Constructions of Alcohol as Emotional Coping and Social Connection in Ghana: Qualitative Study. [PDF]

open access: yesJMIR Infodemiology
Thompson RG   +6 more
europepmc   +1 more source

The life and work of Ernest Sydney Keeping

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract This article reviews the life and contributions of Ernest S. Keeping (1895–1984), a British‐born physicist who became a mathematics professor at the University of Alberta in 1929. He played a pivotal role in shaping the university's Mathematics Department, serving as its head from 1954 to 1961, and continuing to teach until 1970, nine years ...
David R. Bellhouse, Christian Genest
wiley   +1 more source

Mitigating measurement error in misspecified small area models

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract In the framework of Small area estimation, we consider an area‐level model where a subset of covariates is measured with error. The extent of the error is assumed to be constant throughout the areas, and it is expressed by a scalar parameter γ$$ \gamma $$, which multiplies the deterministic covariance matrix of the estimator of the true ...
Diego Battagliese   +3 more
wiley   +1 more source

Host plant use by spittlebug nymphs in agroecosystems: a field survey supporting targeted vegetation management. [PDF]

open access: yesJ Econ Entomol
Puzzovivo MV   +9 more
europepmc   +1 more source

Irregular visits in longitudinal studies: Comparing inverse intensity of visit weighting and imputation in a causal analysis of antidepressant therapeutic treatment

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract Irregular observation times are common in longitudinal observational studies and can affect causal inferences. We use data from electronic health records of Kaiser Permanente Washington patients in the United States who initiated an antidepressant medication between 2008 and 2018, with a confirming diagnosis of depression. We are interested in
Janie Coulombe   +2 more
wiley   +1 more source

No evidence of hypercoagulability, altered fibrinolysis, or increased fibrin(ogen) microaggregates in never-hospitalized long COVID. [PDF]

open access: yesHemasphere
Fraser E   +18 more
europepmc   +1 more source

Model selection for causal inference in missing exposure problems

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract In causal inference, properly selecting the propensity score (PS) model is an important topic and has been widely investigated in observational studies. However, there are very few studies investigating the model selection issue for causal inference when the exposure is missing at random (MAR). When the exposure variable contains missing data,
Yuliang Shi, Yeying Zhu, Joel A. Dubin
wiley   +1 more source

Metabolomics in Early-Phase Clinical Trials from 2010 to 2025. [PDF]

open access: yesMetabolites
Thompson JT   +4 more
europepmc   +1 more source

extBatchMarking: An R package for hidden Markov models for extended batch data

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract We describe a new R package for extended batch‐mark methods. Extended batch marking is a valuable and efficient technique for estimating population sizes and survival probabilities of wild animals. It assigns the same identifier to a group of animals simultaneously, allowing researchers to track their survival over time.
Kehinde Olobatuyi   +4 more
wiley   +1 more source

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