Results 81 to 90 of about 45,763 (274)

A Bimodal Extension of the Beta-Binomial Distribution with Applications

Axioms
In this paper, we propose an alternative distribution to model count data exhibiting uni/bimodality. It arises as a weighted version of the beta-binomial distribution, which is defined by a parametric weight function that admits up to two modes for the ...
Jimmy Reyes, Josu Najera-Zuloaga, Dae-Jin Lee, Jaime Arrué, Yuri A. Iriarte   +4 more
doaj   +1 more source

Leisure and the Opportunity Cost of Travel Time in Recreation Demand Analysis: A Re-Examination [PDF]

Using count data models that account for zero-truncation, overdispersion, and endogenous stratification, this paper estimates the value of access to recreational parks.
Amoako-Tuffour, Joe, Martınez-Espineira, Roberto   +1 more
core   +1 more source

Functional tooth unit, periodontal status, and association with weight change in older adults

Journal of Periodontology, EarlyView.
Abstract Background Literature reports that having fewer teeth is associated with reduced chewing capacity, which in turn may lead to weight changes due to diminished oral functionality. This study aims to assess the association between functional tooth units (FTU) and periodontal status and weight change among older adults participating in the Health,
Mariana S. Muñoz, Natália M. Pola, Juliana B. Hilgert, Fernando N. Hugo, Roberto P. Pimentel, Eleanor M. Simonsick, Francisco W. M. G. Muniz   +6 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  

Mean and Variance Modeling of Under- and Overdispersed Count Data

Journal of Statistical Software, 2016
This article describes the R package CountsEPPM and its use in determining maximum likelihood estimates of the parameters of extended Poisson process models.
David M. Smith, Malcolm J. Faddy
doaj   +1 more source

Multiple Approaches to Absenteeism Analysis [PDF]

, 1996
Absenteeism research has often been criticized for using inappropriate analysis. Characteristics of absence data, notably that it is usually truncated and skewed, violate assumptions of OLS regression; however, OLS and correlation analysis remain the ...
Sturman, Michael C.
core   +1 more source

Environmental and temporal factors affecting record white‐tailed deer antler characteristics in Ontario, Canada

The Journal of Wildlife Management, EarlyView.
Antler characteristics are influenced by a combination of genetics, age, and environmental factors, notably habitat quality and resource availability. In this study, we explored how diverse environmental factors, including climate and land cover composition, affect antler size, tine configuration, and the distribution of record‐scoring white‐tailed ...
Brooklyn S. Cars, Joseph M. Northrup, Keith Beasley, Paul Beasley, Kevin Beasley, Aaron B. A. Shafer   +5 more
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  

Comparative Analysis of the Incidence, Prevalence, and Survival of 8 Types of Parkinsonism in a Population‐Based Study with 367 Million Person Years of Observation over 21 Years

Movement Disorders Clinical Practice, EarlyView.
Abstract Background Findings are contradictory regarding changes in the incidence and prevalence of Parkinson's disease (PD) over time; data for other parkinsonian disorders are rare. Objectives To analyze temporal trends in the incidence and prevalence of eight parkinsonisms (PD, MSA, PSP, CBS, DLB, vascular parkinsonism, drug‐induced parkinsonism ...
Sacha E. Gandhi, Katherine A. Grosset, Prasanth A. Iruthayaraj, Romel Gravesande, Lance Lee, Cathal Doyle, Yoav Ben‐Shlomo, Donald G. Grosset   +7 more
wiley   +1 more source

Association between serum bicarbonate and low mid‐upper arm circumference in patients with non‐dialysis‐dependent chronic kidney disease: A cross‐sectional study

Nutrition in Clinical Practice, EarlyView.
Abstract Background Although previous experimental studies showed that metabolic acidosis promoted muscle catabolism and impaired protein synthesis, few epidemiological studies reported an independent association between serum bicarbonate levels and muscle atrophy in patients with chronic kidney disease (CKD).
Nobuhisa Morimoto, Shintaro Mandai, Tamami Fujiki, Fumiaki Ando, Takayasu Mori, Koichiro Susa, Shotaro Naito, Eisei Sohara, Tatsuhiko Anzai, Kunihiko Takahashi, Wataru Akita, Akihito Ohta, Shinichi Uchida, Soichiro Iimori   +13 more
wiley   +1 more source