Zero Inflated Poisson Model
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Spatial analysis of pneumococcal meningitis in São Paulo in the pre- and post-immunization era
ABSTRACT OBJECTIVE To analyze the pneumococcal meningitis incidence rates in the State of São Paulo, Brazil, by age group, municipalities and micro-regions, as well as the spatial distribution of pneumococcal meningitis incidence rates among children under 5 years old in the pre- (2005–2009) and post-vaccination (2011–2013) periods and its association
Rev. Saúde Pública. Publicado em: 18/07/2019
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2. Modelo destrutivo com variável terminal em experimentos quimiopreventivos de tumores em animais
A indução química de substâncias cancerígenas em experimentos quimiopreventivos em animais é cada vez mais frequente em pesquisas biológicas. O objetivo destes experimentos biológicos é avaliar o efeito de um determinado tratamento na taxa de incidência de tumores em animais. Neste trabalho o número de tumores promovidos por animal será modelado
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/04/2012
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3. Zero-inflated Poisson regression models for QTL mapping applied to tick-resistance in a Gyr x Holstein F2 population
Nowadays, an important and interesting alternative in the control of tick-infestation in cattle is to select resistant animals, and identify the respective quantitative trait loci (QTLs) and DNA markers, for posterior use in breeding programs. The number of ticks/animal is characterized as a discrete-counting trait, which could potentially follow Poisson dis
Genetics and Molecular Biology. Publicado em: 28/10/2011
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4. Distribuições em série de potências modificadas inflacionadas e distribuição Weibull binominal negativa / Inflated modified power serie distribution and Weibull negative binomial
In this paper, some result such as moments generating function, recurrence relations for moments and some theorems of the class of modified power series distributions (MPSD) proposed by Gupta (1974) and of the class of inflated modified power series distributions (IMPSD) both at a different point of zero as the zero point are presented. The standard Poisson
Publicado em: 2011
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5. Verbal fluency in Alzheimer's disease, Parkinson's disease, and major depression
OBJECTIVE: To compare verbal fluency among Alzheimer's disease, Parkinson's disease, and major depression and to assess the sociodemographic and clinical factors associated with the disease severity. METHODS: Patients from an outpatient university center with a clinical diagnosis of Alzheimer's disease, Parkinson's disease or major depression were studied. S
Clinics. Publicado em: 2011
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6. Modelos estatísticos para mapeamento de QTL associados a dados de contagem / Statistical models for QTL mapping associated to counting data
This study has as main objective to analyze and compare statistical approaches to QTL mapping for parasites resistance in bovines. The animals, under artificial infestation, were periodically evaluated by counting, as ticks count. These data are characterized as repeated measures and, usually, dont follow or partially follow the usual requirements for the an
Publicado em: 2009
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7. The use of negative binomial modelling in a longitudinal study of gastrointestinal parasite burdens in Canadian dairy cows
The epidemiology of bovine gastrointestinal nematodes was investigated through a 1-year (October 1999 to September 2000) longitudinal study in 38 Canadian dairy herds from 4 different provinces (Prince Edward Island, Quebec, Ontario, Saskatchewan). For each herd, fecal egg counts from 8 randomly selected animals were performed on a monthly or quarterly basis