Results 31 to 40 of about 1,170 (203)

Beta-Geometric Regression for Modeling Count Data on First Antenatal Care Visit (ANC) with Application

open access: yesJournal of Biostatistics and Epidemiology, 2023
Introduction: Although geometric distribution, which is a special case of Negative Binomial (NB) distribution, also belongs to the discrete family of distributions, little attention has been paid to modeling count data with the geometric distribution ...
Zainab Al-Balushi   +2 more
doaj   +1 more source

Stationary underdispersed INAR(1) models based on the backward approach

open access: yesRevstat Statistical Journal, 2021
Most of the stationary first-order autoregressive integer-valued (INAR(1)) models were developed for a given thinning operator using either the forward approach or the backward approach. In the forward approach the marginal distribution of the time series is specified and an appropriate distribution for the innovation sequence is sought. Whereas in the
Emad-Eldin A. A. Aly, Nadjib Bouzar
openaire   +4 more sources

Camera Trap Design Determines Taxa Detected at Carrion Sites. [PDF]

open access: yesEcol Evol
In this study, we demonstrated that camera trap orientation (i.e., horizontal and vertical) at carrion sites differed in their animal community composition and taxa associations. The vertical camera trap orientation was more likely to detect necrophagous invertebrates, while the horizontal orientation was more likely to detect white‐tailed deer.
Lahiri A   +5 more
europepmc   +2 more sources

Adoption intensity of soil and water conservation practices by smallholders: evidence from Northern Ghana

open access: yesBio-based and Applied Economics, 2014
Soil and water conservation practices are being promoted in Ghana as a way of sustainably managing the environment to support agricultural production. Despite the important role the adoption of the practices plays in conserving the environment, very few ...
Paul Nkegbe, Bhavani Shankar
doaj   +1 more source

Generalised Poisson Distributions for Modelling Parity

open access: yes, 2021
Conventional parametric count distributions, namely the Poisson and Negative-Binomialmodels, do not offer satisfactory descriptions of empirical distributions of completed cohortparity.
Barakat, Bilal Fouad
core   +2 more sources

Poverty and malaria morbidity in the Jirapa District of Ghana: A count regression approach

open access: yesCogent Economics & Finance, 2017
Malaria potentially affects everyone in the tropics and sub-tropics, however, the poor and vulnerable are worse affected mainly due to the socio-economic constraints that confront them. In Ghana, the Upper West Region, which is the poorest, is one of the
Paul Kwame Nkegbe   +2 more
doaj   +1 more source

Mean and Variance Modeling of Under- and Overdispersed Count Data

open access: yesJournal 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

Antibiotic Resistances in Livestock: A Comparative Approach to Identify an Appropriate Regression Model for Count Data

open access: yesFrontiers in Veterinary Science, 2017
Antimicrobial resistance in livestock is a matter of general concern. To develop hygiene measures and methods for resistance prevention and control, epidemiological studies on a population level are needed to detect factors associated with antimicrobial ...
Anke Hüls   +8 more
doaj   +1 more source

A Correction for an Underdispersed Event Count Probability Distribution [PDF]

open access: yesPolitical Analysis, 1993
We demonstrate that the expected value and variance commonly given for a well-known probability distribution are incorrect. We also provide corrected versions and report changes in a computer program to account for the known practical uses of this distribution.The probability distribution in question, named the continuous parameter binomial (CPB) by ...
Rainer Winkelmann   +2 more
openaire   +1 more source

A Flexible Mixed Model for Clustered Count Data

open access: yesStats, 2022
Clustered count data are commonly modeled using Poisson regression with random effects to account for the correlation induced by clustering. The Poisson mixed model allows for overdispersion via the nature of the within-cluster correlation, however ...
Darcy Steeg Morris, Kimberly F. Sellers
doaj   +1 more source

Home - About - Disclaimer - Privacy