Results 21 to 30 of about 43,291,481 (361)
Geriatrics, 2021 The quantification of biological age in humans is an important scientific endeavor in the face of ageing populations. The frailty index (FI) methodology is based on the accumulation of health deficits and captures variations in health status within ...
Sebastian Moguilner +5 more
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Long COVID in the Faroe Islands - a longitudinal study among non-hospitalized patients
Clinical Infectious Diseases, 2020 Background Little is known about long-term recovery from COVID-19 disease, especially in non-hospitalized individuals. In this longitudinal study we present symptoms registered during the acute phase as well as long COVID, i.e.
M. S. Petersen +7 more
semanticscholar +1 more source
HRB Open Research, 2020 Background: Research on mortality at the population level has been severely restricted by an absence of linked death registration and survey data in Ireland.
Mark Ward +6 more
doaj +1 more source
The Psychological Impacts of a COVID-19 Outbreak on College Students in China: A Longitudinal Study
International Journal of Environmental Research and Public Health, 2020 An outbreak in Wuhan, China in late 2019 of a highly infectious new coronary pneumonia (COVID-19) led to the imposition of countrywide confinement measures from January to March 2020. This is a longitudinal study on changes in the mental health status of
H. Li, Hui Cao, D. Leung, Y. Mak
semanticscholar +1 more source
HRB Open Research, 2021 Background: The frailty index (FI) is based on accumulation of health deficits. FI cut-offs define non-frail, prefrail and frail states. We described transitions of FI states in The Irish Longitudinal Study on Ageing (TILDA).
Roman Romero-Ortuno +4 more
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HRB Open Research, 2020 Background: Research on mortality at the population level has been severely restricted by an absence of linked death registration and survey data in Ireland.
Mark Ward +6 more
doaj +1 more source
BMC Geriatrics, 2022 Objectives We aimed to replicate existing international (US and UK) mortality indices using Irish data. We developed and validated a four-year mortality index for adults aged 50 + in Ireland and compared performance with these international indices.
Soraya Matthews +5 more
doaj +1 more source
Derived variables for longitudinal studies [PDF]
Proceedings of the National Academy of Sciences, 1999 Suppose that for each individual a vector of features is measured at a number of time points. We look for a transformation of the features, the same at all time points, that will induce a simple dependency structure. In the simplest situation this requires that a certain asymmetric matrix has real nonzero eigenvalues. Extensions are considered.
Nanny Wermuth, David Cox
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Cervicovaginal microbiome and natural history of HPV in a longitudinal study
PLoS Pathogens, 2020 Background Human papillomavirus (HPV) infection is one of the most common sexually transmitted infections. However, only a small percentage of high-risk (HR) HPV infections progress to cervical precancer and cancer.
Mykhaylo Usyk +9 more
semanticscholar +1 more source
Combining longitudinal studies of PSA [PDF]
Biostatistics, 2004 Prostate-specific antigen (PSA) is a biomarker commonly used to screen for prostate cancer. Several studies have examined PSA growth rates prior to prostate cancer diagnosis. However, the resulting estimates are highly variable. In this article we propose a non-linear Bayesian hierarchical model to combine longitudinal data on PSA growth from three ...
Christopher H. Morrell +4 more
openaire +3 more sources