Results 61 to 70 of about 20,066 (266)

A Comparison of the Robust Zero-Inflated and Hurdle Models with an Application to Maternal Mortality

Mathematical and Computational Applications
This study evaluates the performance of count regression models in the presence of zero inflation, outliers, and overdispersion using both simulated and real-world maternal mortality dataset.
Phelo Pitsha, Raymond T. Chiruka, Chioneso S. Marange   +2 more
doaj   +1 more source

Modelling Claim Frequency in Vehicle Insurance

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2016
The paper is focused on modelling claim frequency and extends the work of Kafková and Křivánková, 2014 (Kafková, S., Křivánková, L. 2014. Generalized linear models in vehicle insurance.
Jiří Valecký
doaj   +1 more source

Pacing in posttraumatic stress disorder therapy: A meta‐regression of treatment frequency and completion rates

Journal of Traumatic Stress, EarlyView.
Abstract The present study utilized posttraumatic stress disorder (PTSD) clinical trials repository data to analyze associations between treatment frequency (i.e., weekly or more than weekly) and completion outcomes across cognitive processing therapy (CPT), prolonged exposure (PE), and eye movement desensitization and reprocessing (EMDR).
David M. Horton, Gan Shi, Matthew A. Davis, Peter P. Grau, Amy M. Kilbourne   +4 more
wiley   +1 more source

Modeling Count Distributions via Skewness–Kurtosis Orthogonal Expansions

Mathematics
We develop a semi-parametric framework for representing discrete probability mass functions through orthogonal polynomial representations. Classical count models, such as the Poisson and negative binomial distributions, impose restrictive structural ...
Won-Woo Lee, Ji-Hun Lee, Jong-Seung Lee, Hyung-Tae Ha   +3 more
doaj   +1 more source

Niche Based or Neutral Processes? Bacterial Community Assembly in Soil Aggregates During Primary and Secondary Succession

Land Degradation &Development, EarlyView.
ABSTRACT Abiotic and biotic filters shape microbial phylogenetic diversity. Here, we evaluated bacterial phylogenetic diversity in micro‐ and macro‐aggregates across primary and secondary soil successions to assess the relative influence of niche‐based and neutral processes.
Lidong Huang, Eduardo Pérez‐Valera, Daquan Sun   +2 more
wiley   +1 more source

Can Knowledge of Taxi Drivers’ Intentions to Commit Traffic Violations Predict Crash Frequency?

Safety
Taxi drivers are a group with high driving exposure and are involved in a significant number of urban traffic casualties. Using two modelling approaches, this study examines whether the intention to speed, as measured by the Theory of Planned Behaviour ...
Hamid Reza Behnood, Sonja Elisabeth Forward, Jan Andersson, Mohammadreza Bakhtiary   +3 more
doaj   +1 more source

Artificial Voices, Real Causes: The Dilemma of Virtual Influencer‐Driven Brand Activism

Psychology &Marketing, EarlyView.
ABSTRACT Brands are more frequently adopting virtual influencers (VIs) to lead activism campaigns. However, little is known about when and how such activism effectively drives consumer engagement. This research, in Study 1, examines 14,464 Instagram posts from 18 diverse VIs using large‐scale analytics to assess engagement intensity and the dynamics of
Sampa Anupurba Pahi, Debasis Pradhan, Abhisek Kuanr, Baidyanath Biswas, Jingyu Zhu   +4 more
wiley   +1 more source

Control of glycaemia and its related factors in patients with type 2 diabetes, north of Iran: generalized linear mixed models and prevalence of overdispersion in patients [PDF]

Health Science Monitor
Background & Aims:  Glycemic control is very important to prevent or suspend complications in patients with type 2 diabetes (PT2D). The aim of this study was to investigate the status of glycemic control and its related factors in patients with type 2 ...
Samaneh Hosseinzadeh, Saeideh Davar
doaj  

Business‐Like Narrative and Public Engagement: Evidence From TED Talks on Nonprofit Issues

Nonprofit Management and Leadership, EarlyView.
ABSTRACT While the trend of nonprofits adopting business‐like practices has been widely discussed, limited attention has been paid to how the broader public responds to this shift. One way to capture public reactions is by examining engagement with business‐like narratives in media.
Jun Zhang
wiley   +1 more source

Generalized Additive Models for Location Scale and Shape (GAMLSS) in R

Journal of Statistical Software, 2007
GAMLSS is a general framework for fitting regression type models where the distribution of the response variable does not have to belong to the exponential family and includes highly skew and kurtotic continuous and discrete distribution.
D. Mikis Stasinopoulos, Robert A. Rigby
doaj