Results 21 to 30 of about 10,745,166 (286)

Weighted Cox Regression Using the R Package coxphw

Journal of Statistical Software, 2018
Cox's regression model for the analysis of survival data relies on the proportional hazards assumption. However, this assumption is often violated in practice and as a consequence the average relative risk may be under- or overestimated.
Daniela Dunkler, Meinhard Ploner, Michael Schemper, Georg Heinze   +3 more
doaj   +1 more source

How to calculate sample size in animal and human studies

Frontiers in Medicine, 2023
One of the most important statistical analyses when designing animal and human studies is the calculation of the required sample size. In this review, we define central terms in the context of sample size determination, including mean, standard deviation,
Xinlian Zhang, Phillipp Hartmann, Phillipp Hartmann   +2 more
doaj   +1 more source

L’affidabilità dei criteri di inclusione nelle meta-analisi in educazione: una rassegna di studi

Journal of Educational, Cultural and Psychological Studies, 2017
Reliability of meta-analysis standards in education: an overview of studies. Research syntheses, such as meta-analyses and systematic reviews, are methods for combining results of different primary studies on a certain theme.
Marta Pellegrini
doaj   +1 more source

Enhancing Statistical Inference in Psychological Research via Prospective and Retrospective Design Analysis

Frontiers in Psychology, 2020
In the past two decades, psychological science has experienced an unprecedented replicability crisis, which has uncovered several issues. Among others, the use and misuse of statistical inference plays a key role in this crisis.
Gianmarco Altoè, Giulia Bertoldo, Claudio Zandonella Callegher, Enrico Toffalini, Antonio Calcagnì, Livio Finos, Massimiliano Pastore   +6 more
doaj   +1 more source

Experimental duration determines the effect of arbuscular mycorrhizal fungi on plant biomass in pot experiments: A meta-analysis

Frontiers in Plant Science, 2022
Arbuscular mycorrhizal fungi (AMF) play various important roles in promoting plant growth. Numerous environmental and evolutionary factors influence the response of plants to AMF. However, the importance of the individual factors on the effects of AMF on
Mingsen Qin, Lei Li, Jean‐Pascal Miranda, Yun Tang, Bo Song, Maria Kathleen Oosthuizen, Wangrong Wei   +6 more
doaj   +1 more source

A Size Effect Model Combining Both Surface Effects and the Fracture Process Zone (FPZ) for Rocks under Uniaxial Compression

Applied Sciences
Developing a size effect model that can encompass the surface effect and the fracture process zone (FPZ) is still challenging. Here, a combined size effect model (CSE model) is formulated by integrating the surface effect size model and the size effect ...
Yang Liu, Xiaoyu Liu, Huimei Zhang, Fengbo Zhu   +3 more
doaj   +1 more source

Statistical Procedures for Assessing the Need for an Affirmative Action Plan: A Reanalysis of Shea v. Kerry

Statistics and Public Policy, 2020
In the 1980s, reports from Congress and the Government Accountability Office (GAO) presented statistical evidence showing that employees in the Foreign Service were overwhelmingly White male, especially in the higher positions.
Qing Pan, Weiwen Miao, Joseph L. Gastwirth   +2 more
doaj   +1 more source

Finite Size Effect in Persistence

, 2006
We have investigated the random walk problem in a finite system and studied the crossover induced in the the persistence probability scales by the system size.Analytical and numerical work show that the scaling function is an exponentially decaying ...
D. Chakraborty, J. K. Bhattacharjee, M. Marcos-Martin, S. N. Majumdar, S. Redner   +4 more
core   +1 more source

The WHAAM Application: a Tool to Support the Evidence-Based Practice in the Functional Behaviour Assessment

Journal of Innovation in Health Informatics, 2018
Background: The most recent computing technologies can promote the application of evidence-based practice (EBP) in the field of Applied Behavior Analysis (ABA).
Gianluca Merlo, Giuseppe Chiazzese, Manuela Sanches-Ferreira, Antonella Chifari, Luciano Seta, Colin McGee, Alberto Mirisola, Isabella Giammusso   +7 more
doaj   +1 more source

Inhibition of Return in the visual field [PDF]

, 2013
Inhibition of return (IOR) as an indicator of attentional control is characterized by an eccentricity effect, that is, the more peripheral visual field shows a stronger IOR magnitude relative to the perifoveal visual field.
Bao Y., Ernst Pöppel, Hans Strasburger, Kerstin Schill, LaBerge D., Posner M. I., Quan Lei, Yan Bao, Yu Tong, Yuan Fang   +9 more
core   +1 more source