Results 131 to 140 of about 246,485 (302)

Generalized Measurement Invariance Tests with Application to Factor Analysis [PDF]

open access: yes
The issue of measurement invariance commonly arises in factor-analytic contexts, with methods for assessment including likelihood ratio tests, Lagrange multiplier tests, and Wald tests.
Achim Zeileis, Edgar C. Merkle
core  

Diagnostic Accuracy of Size‐Based Preoperative CT Assessment for Predicting Lymph Node Metastasis in Colon Cancer: A Systematic Review and Meta‐Analysis

open access: yesAnnals of Gastroenterological Surgery, EarlyView.
Preoperative CT based on lymph node size shows moderate accuracy for detecting nodal metastasis in colon cancer. In this meta‐analysis of 29 studies (5,634 patients), pooled sensitivity and specificity were 0.69 and 0.66. Size‐based CT alone has limited value for clinical decision‐making.
Yuji Takayama   +4 more
wiley   +1 more source

Giving and receiving help in three contexts as predictors of alcohol outcomes in a longitudinal study of sober living house residents

open access: yesAmerican Journal of Community Psychology, EarlyView.
Abstract Although peer support is central to the social model approach emphasized in sober living houses (SLHs), no longitudinal studies have examined helping among SLH residents. This longitudinal study examined benefits of helping in three contexts among SLH residents. Data were from 205 participants entering 28 SLHs across 2021–2023. Interviews were
Sarah E. Zemore   +4 more
wiley   +1 more source

The prevalence, awareness, and treatment status of diabetic retinopathy among individuals aged 18-75 years in Hubei province in 2019

open access: yesZhongguo gonggong weisheng
ObjectiveTo investigate the prevalence, awareness, and treatment rates of diabetic retinopathy (DR) among individuals aged 18–75 years with diabetes mellitus in Hubei province, and to provide scientific evidence for DR prevention and control.
Miaoyan SHEN   +7 more
doaj   +1 more source

Power of edge exclusion tests in graphical gaussian models

open access: yes, 2003
Asymptotic multivariate normal approximations to the joint distributions of edge exclusion test statistics for saturated graphical Gaussian models are derived.
McDonald, John   +2 more
core  

Testing for Causality in Variance using Multivariate GARCH Models [PDF]

open access: yes, 2004
Tests of causality in variance in multiple time series have been proposed recently, based on residuals of estimated univariate models. Although such tests are applied frequently little is known about their power properties.
Hafner, Christian M., Herwartz, Helmut
core  

Milestone Attainment in Young Children With Arthrogryposis Multiplex Congenita: Developmental Profile and Associated Factors

open access: yesAmerican Journal of Medical Genetics Part C: Seminars in Medical Genetics, EarlyView.
ABSTRACT Evidence on developmental milestones in children with arthrogryposis multiplex congenita (AMC) under the age of five is scarce. This multisite cross‐sectional study described developmental status and examined factors associated with milestone attainment in 143 children aged 0–66 months from a pediatric AMC Registry.
Ahlam Zidan   +13 more
wiley   +1 more source

Temporary versus Permanent Pandemic Transit Leavers: Findings from the 2022 US National Household Travel Survey

open access: yesFindings
Using data from the 2022 National Household Travel Survey, I explore the socio-demographic characteristics of Americans who reduced their use of public transit during the latter stages of the COVID-19 pandemic.
Julene Paul
doaj   +1 more source

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