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The Weibull-Negative-Binomial Model in the Analysis of Survival Data

Grant number: 10/14146-9
Support type:Scholarships in Brazil - Master
Effective date (Start): March 01, 2011
Effective date (End): May 31, 2012
Field of knowledge:Physical Sciences and Mathematics - Probability and Statistics - Statistics
Principal researcher:Vicente Garibay Cancho
Grantee:Bao Yiqi
Home Institution: Instituto de Ciências Matemáticas e de Computação (ICMC). Universidade de São Paulo (USP). São Carlos , SP, Brazil


The Weibull negative binomial distribution (BNW) is proposed which generalizes the Weibull geometric distribution (WG) is introduced by Barreto-Souza et al. (2010). Furthermore, we propose a model for survival data with cure fraction, which includes as special cases the traditional models of survival with cure fraction of Berkson & Gage (1952) and Chen et al. (1999). The new propose survival's model with cure fraction assume an activation of latent structure in explaining the occurrence of an event of interest. The proposal is based on negative binomial distribution for the number of causes of occurrence of event of interest in statistics and order of activation times to explain the latent time before the event of interest. The objective of this project is to study characteristics of the proposed models, as well as develop procedures and diagnostic inferences from a frequentist and Bayesian perspective.

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Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
YIQI, Bao. Estimação e diagnóstico na disribuição Weibull-Binomial-Negativa em análise de sobrevivência. 2012. Master's Dissertation - Universidade de São Paulo (USP). Instituto de Ciências Matemáticas e de Computação São Carlos.

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