Results 71 to 80 of about 82,329 (299)

Power and Sample Size Computation for Wald Tests in Latent Class Models [PDF]

, 2016
Latent class (LC) analysis is used by social, behavioral, and medical science researchers among others as a tool for clustering (or unsupervised classification) with categorical response variables, for analyzing the agreement between multiple raters, for
Tekle, F.B., Vermunt, J.K., Jeroen K. Vermunt, Dereje W. Gudicha, Gudicha, D.W., Vermunt, J.K.; id_orcid, Fetene B. Tekle   +6 more
core   +1 more source

Cognitive Profiles of Aging in Multiple Sclerosis

Frontiers in Aging Neuroscience, 2019
BackgroundIncreasingly favorable mortality prognosis in multiple sclerosis (MS) raises questions regarding MS-specific cognitive aging and the presence of comorbidities such as Alzheimer’s disease (AD).ObjectiveTo assess elderly with MS (EwMS) and age ...
Dejan Jakimovski, Dejan Jakimovski, Bianca Weinstock-Guttman, Shumita Roy, Michael Jaworski, Laura Hancock, Alissa Nizinski, Pavitra Srinivasan, Tom A. Fuchs, Tom A. Fuchs, Kinga Szigeti, Robert Zivadinov, Robert Zivadinov, Robert Zivadinov, Ralph H. B. Benedict   +14 more
doaj   +1 more source

Enhancing Maturation of Human Neuromuscular Organoids via Electrical Stimulation

Advanced Science, EarlyView.
A framework for on‐demand and non‐invasive exposure of human neuromuscular organoids (NMOs) to electrical stimuli is established to promote their maturation. The robustness and effectiveness of different stimulation regimes are evaluated via thorough characterization of organoid tissue structure and contraction capacity. Chronic electrical stimulation,
Chrysanthi‐Maria Moysidou, Inês Afonso Martins, Ismail Amr El‐Shimy, Iacopo Bicci, Donatella Cea, Christina Bukas, Isra Mekki, Mara‐Camelia Rusu, Aylin Nebol, Ines Lahmann, Marie Piraud, Enrico Klotzsch, Mina Gouti   +12 more
wiley   +1 more source

On Hypothesis Testing: A Selective Look at the Lagrange Multiplier, Likelihood Ratio and Wald Tests

, 1992
This paper discusses some issues related to the use of the Lagrange multiplier, likelihood ratio and Wald tests in econometrics. In particular, the paper focuses on three issues: (i) the Wald test with nonlinear constraints; (ii) conflict among criteria ...
Cribari-Neto, Francisco, Brown, Kenneth
core   +3 more sources

A Wald test for the cointegration rank in nonstationary fractional systems [PDF]

Journal of Econometrics, 2009
This paper develops new methods for determining the cointegration rank in a nonstationary fractionally integrated system, extending univariate optimal methods for testing the degree of integration. We propose a simple Wald test based on the singular value decomposition of the unrestricted estimate of the long run multiplier matrix.
Avarucci Marco, Velasco Carlos
openaire   +5 more sources

Integrated Single‐Cell and Spatial Analysis Reveals a Metabolic‐Immune Axis Driving Aortic Dissection

Advanced Science, EarlyView.
Single‐cell and spatial profiling of 110 human thoracic aortic samples reveals a stromal–immune circuit driving aortic dissection. An elastin‐rich fibroblast subset is depleted with age and markedly reduced in disease, weakening aortic wall integrity.
Jing Tao, Huanjie Yang, Jiahui Yong, Xueting Chen, Qiang Zhao, Xueli Wu, Lei Yan, Li Pang, Fan Luo, Mengjun Yu, Shanshan Pan, Deyang Li, Rouxi Chen, Juan Wang, Zhensheng Dong, Fan Yang, Yue Wang, Yang Chen, Hongjian Zheng, Zhimin Yang, Zijie Wang, Karsten Kristiansen, Hui Peng, Xiaodong Fang, Juan Shen, Yining Yang   +25 more
wiley   +1 more source

Lactoferrin Deficiency During Lactation Causes Adult Obesity‐Related Metabolic Disease Through Persistent Adipose Dysfunction Driven by Impaired Adipocyte Development

Advanced Science, EarlyView.
Lactational lactoferrin deficiency exerts lasting effects on epididymal adipose tissue development from lactation into adulthood: it impairs adipocyte hyperplasia and induces pathological hypertrophy, resulting in lower body weight yet exacerbated metabolic dysfunction under a high‐fat diet in adulthood.
Qin An, Yunxia Zou, Wenli Wang, Zhimei Cheng, Zhuoxing Zhang, Ruwei Liu, Xiong Wang, Kunlun Huang, Fangrong Ding, Yunping Dai, Qingyong Meng, Yali Zhang   +11 more
wiley   +1 more source

Social media-based bibliotherapy for improving the mental health of informal caregivers of people with dementia: a randomized controlled trial

BMC Nursing
Background Despite their own experience of mental health issues, informal caregivers of individuals with dementia are often overlooked, and there is a limited availability of community services tailored specifically for them.
Shanshan Wang, Daphne Sze Ki Cheung, Sze Him Isaac Leung, Avis Yat Ngar Fan, Wenjing Ning, Angela Yee Man Leung   +5 more
doaj   +1 more source

Does stock market-based financial development promotes economic growth in emerging markets? New evidence from Nigeria

Serbian Journal of Management, 2020
This study examines the effect of stock market development on economic growth in Nigeria. The study spans the period 1980-2016. It employs the ARDL approach to cointegration.
Solomon Prince Nathaniel, Joseph Ayoola Omojolaibi, Chikaodili Josephine Ezeh   +2 more
doaj   +1 more source

A Nonparametric Two-Sample Wald Test of Equality of Variances [PDF]

Advances in Decision Sciences, 2011
We develop a test for equality of variances given two independent random samples of observations. The test can be expected to perform well when both sample sizes are at least moderate and the sample variances are asymptotically equivalent to the maximum likelihood estimators of the population variances. The test is motivated by and is here assessed for
Allingham, David, Rayner, John
openaire   +3 more sources