Dados do Trabalho

Título

A ZERO-INFLATED GENERALIZED GAMMA CURE-RATE MODEL APPLICATION ON DATASET OF LABOR

Resumo

Generally, the women for whom the duration of labor cannot be observed due to fetal death that generating a proportion of times equal to zero, are often excluded of data analysis of the time until the labor. The objective of this paper is to consider the Generalized Gamma Zero-Inflated Cure-Rate model in the context of labor time, including times equal to zero, and to evaluate likelihood-based estimation procedures for the parameters by a simulation study and then apply to a real dataset. In general, the inference procedures showed a better performance for larger samples and low proportions of zero inflation and cure rate.%, also we verify the diagnostic of fitness of the model. To exemplify how this model can be an important tool for investigating the course of the childbirth process, we considered the World Health Organization (WHO) dataset. We thanks WHO for granting us permission to use the dataset.

Palavras-chave

childbirth, duration of labor, cure-rate models, survival analysis, zero-inflation.

Área

Análise de Sobrevivência