Results 61 to 70 of about 1,087,600 (300)

Using zero inflated models to analyze dental caries with many zeroes

Indian Journal of Dental Research, 2010
Aim: The study aimed to analyze and determine the factors associated with dental caries experience contains many zeros by zero inflated models. Design: A cross sectional design was employed using clinical examination and questionnaire with interview ...
Javali Shivalingappa, Pandit Parameshwar
doaj  

HANDLING OF OVERDISPERSION CASES IN MORBIDITY DATA IN SELUMA REGENCY

Media Statistika
The problem of overdispersion as a violation of the assumption of equidispersion in Poisson regression is generally caused by  sources of unobserved heterogeneity, missing observations on predictor variables, outliers in the data, errors in the ...
Mey Yanti Sarumpaet, Sigit Nugroho, Ramya Rachmawati   +2 more
doaj   +1 more source

Using observation-level random effects to model overdispersion in count data in ecology and evolution [PDF]

, 2014
Overdispersion is common in models of count data in ecology and evolutionary biology, and can occur due to missing covariates, non-independent (aggregated) data, or an excess frequency of zeroes (zero-inflation).
Xavier A. Harrison, Harrison, XA
core   +2 more sources

Linking community structure and climate vulnerability in desert plant assemblages of southern California

American Journal of Botany, EarlyView.
Abstract Premise Desert plant assemblages in southern California provide an opportunity to link patterns of community structure with climate‐driven vulnerability in a rapidly changing environment. California sustains an exceptionally diverse flora of approximately 4300 plant species, with 31% identified as endemic.
Hector Zumbado‐Ulate, Luis E. Barrios, Danelle A. Baronia, G. Darrel Jenerette, Lynn C. Sweet   +4 more
wiley   +1 more source

Using zero-inflated and hurdle regression models to analyze schistosomiasis data of school children in the southern areas of Ghana.

PLoS ONE
BackgroundSchistosomiasis is a neglected disease prevalent in tropical and sub-tropical areas of the world, especially in Africa. Detecting the presence of the disease is based on the detection of the parasites in the stool or urine of children and ...
Kojo Nketia, Dziedzom K de Souza
doaj   +1 more source

Floral traits and hermaphrodite abundance shape female advantage in a gynodioecious plant

American Journal of Botany, EarlyView.
Abstract Premise Gynodioecy is maintained through female advantage in seed fitness that depends on the sex ratio of a population. We hypothesized that females of Silene acaulis would exhibit floral traits associated with elevated outcross pollination and that sex ratio would impact pollen limitation and inbreeding depression such that female advantage ...
Emma K. Chandler, Megan L. DeMarche
wiley   +1 more source

A new zero-inflated regression model with application [PDF]

, 2018
In this paper, a new zero-inflated regression model, called Zero-Inflated Poisson-Lindley regression model, isproposed for count data modeling. Poisson-Lindley distribution arises from the Poisson distribution when itsparameter follows a Lindley ...
Altun, Emrah
core   +1 more source

Frequency of Indian Health Insurance Claims Data using Zero-Inflated Poisson (ZIP) and Zero-Inflated Negative Binomial (ZINB) Regression Models [PDF]

, 2023
The study focused on Indian health insurance claims using the ZIP model (Zero-Inflated Poisson) ZINB model (Zero-Inflated Negative Binomial) and Poisson regression analysis used for measuring the zero-Inflated count data.
P S, Lalitha, Paidipati, Kiran Kumar, Gajula, Srimannarayana   +2 more
core  

Eco‐Innovation, Economic Complexity, and Sustainability: A Bibliometric and Systematic Literature Review

Business Strategy and the Environment, EarlyView.
ABSTRACT This study systematizes the literature on eco‐innovation and economic complexity, aiming to understand how the sophistication of productive structures shapes countries' capacity to develop environmentally responsible innovations, and how eco‐innovation may, in turn, influence productive sophistication.
Gregory Matheus Pereira de Moraes, Diogo Ferraz   +1 more
wiley   +1 more source

When Nature Counts: Corporate Biodiversity Attention and Access to Bank Finance

Business Strategy and the Environment, EarlyView.
ABSTRACT This paper investigates whether corporate attention to biodiversity influences firms' access to bank loans, an overlooked question in the emerging biodiversity–finance literature. Using a novel, text‐based measure constructed from 446 biodiversity‐related keywords and applied to Chinese A‐share listed firms from 2000 to 2023, we show that ...
Ruxiao Li, Bo Zhang, Zhang‐Hangjian Chen, Hafiz Hoque   +3 more
wiley   +1 more source