Results 251 to 260 of about 14,176 (292)

The Association Between Foetal Brain and Body Size Mid‐Gestation and Neurodevelopmental Disorders in Childhood

Paediatric and Perinatal Epidemiology, EarlyView.
ABSTRACT Background Smallness for gestational age and reduced head circumference at birth are consistently associated with later neurodevelopmental disorders (NDD), but it is unclear whether similar associations are present at foetal biometry in mid‐gestation. Objectives To investigate associations between second‐trimester foetal biometric measurements
Mads Langager Larsen, Gorm Greisen, Lone Krebs, Christina Engel Hoei‐Hansen, Olav Bjørn Petersen   +4 more
wiley   +1 more source

Neonatal Adverse Outcomes in Métis Children in Alberta, Canada: A Retrospective Cohort Study

Paediatric and Perinatal Epidemiology, EarlyView.
ABSTRACT Background Composite indicators of neonatal morbidity specific to Métis populations in Canada are lacking. Objectives To estimate the incidence of neonatal morbidity and neonatal death among Métis neonates in Alberta, and to identify maternal and neonatal factors associated with neonatal morbidity. Methods Population‐based retrospective cohort
Jesus Serrano‐Lomelin, Reagan Bartel, Ashton Anderson, Kelsey Bradburn, Susan Crawford, Jeffrey A. Bakal, Amy Colquhoun, Anne Hicks, Matthew Hicks, Manoj Kumar, Rhonda J. Rosychuk, Alvaro Osornio‐Vargas, Radha Chari, Maria B. Ospina   +13 more
wiley   +1 more source

Understanding Trust, Delays and Black Women's Experiences Obtaining Abortion Care in the US Midwest

Perspectives on Sexual and Reproductive Health, EarlyView.
ABSTRACT Introduction Abortion scholars treat the timing of care as an important measure of access. Despite the legacy of medical mistreatment of Black people, few studies have explored the racialized relationship between medical trust and when abortion care is obtained.
Tamika Odum, Jeremy Brenner‐Levoy, Sarah Bostic, Abigail Norris Turner, Katherine Rivlin, Zoe Muzyczka, Alison H. Norris, Danielle Bessett   +7 more
wiley   +1 more source

Beyond Individual Prenatal Risk Factors in Early Childhood Infection Severity: A Multi‐Exposure Framework

Paediatric and Perinatal Epidemiology, EarlyView.
Kedir N. Turi
wiley   +1 more source

Mendelian randomization for multiple exposures and outcomes with Bayesian Directed Acyclic Graphs exploration and causal effects estimation

Zuber V, Cronjé T, Cai N, Gill D, Bottolo L.   +4 more
europepmc   +1 more source

Collapsibility for Directed Acyclic Graphs

Scandinavian Journal of Statistics, 2009
Abstract. Collapsibility means that the same statistical result of interest can be obtained before and after marginalization over some variables. In this paper, we discuss three kinds of collapsibility for directed acyclic graphs (DAGs): estimate collapsibility, conditional independence collapsibility and model collapsibility. Related to collapsibility,
Xie, Xianchao, Geng, Zhi
openaire   +3 more sources

Directed Acyclic Graphs [PDF]

This source code implements a unified framework for pre-processing Directed Acyclic Graphs (DAGs) to lookup reachability between two vertices as well as compute the least upper bound of two vertices in constant time.
Dominique Haughton, Jonathan Haughton, Victor S.Y. Lo   +2 more
core   +3 more sources

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On counting homomorphisms to directed acyclic graphs

Journal of the ACM, 2006
It is known that if P and NP are different then there is an infinite hierarchy of different complexity classes that lie strictly between them. Thus, if P ≠ NP, it is not possible to classify NP using any finite collection of complexity classes. This situation has led to attempts to identify smaller classes of problems within NP where
Martin E. Dyer, Leslie Ann Goldberg, Mike Paterson   +2 more
openaire   +2 more sources

On Mergings in Acyclic Directed Graphs

SIAM Journal on Discrete Mathematics, 2019
Summary: Consider an acyclic directed graph \(G\) with sources \(s_1, s_2, \ldots,s_n\) and sinks \(r_1, r_2, \ldots, r_n\). For \(i=1, 2, \ldots,n\), let \(c_i\) denote the size of the minimum edge cut between \(s_i\) and \(r_i\), which, by Menger's theorem, implies that there exists a group of \(c_i\) edge-disjoint paths from \(s_i\) to \(r_i ...
openaire   +1 more source

Directed Acyclic Graphs in Surgical Research

Journal of Surgical Research, 2023
Surgical research often utilizes multivariable regression to evaluate causal relationships between variables, but there is usually little explanation of the decision-making regarding which variables were controlled for. We propose that directed acyclic graphs (DAGs)-a formal logic tool that illustrates connections between variables-should be used to ...
AlleaBelle Gongola, Jace C. Bradshaw
openaire   +2 more sources