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For the first time, we propose a five-parameter lifetime model called the McDonald Weibull distribution to extend the Weibull, exponentiated Weibull, beta Weibull and Kumaraswamy Weibull… (More)

For the first time, we propose a new distribution so-called the beta generalized Rayleigh distribution that contains as special sub-models some well-known distributions. Expansions for the cumulative… (More)

We study a five-parameter lifetime distribution called the McDonald extended exponential model to generalize the exponential, generalized exponential, Kumaraswamy exponential and beta exponential… (More)

- Aldo M. Garay, Elizabeth M. Hashimoto, Edwin M. M. Ortega, Victor H. Lachos
- Computational Statistics & Data Analysis
- 2011

The zero-inflated negative binomial model is used to account for overdispersion detected in data that are initially analyzed under the zero-inflated Poisson model. A frequentist analysis, a jackknife… (More)

We introduce the log-odd Weibull regression model based on the odd Weibull distribution (Cooray, 2006). We derive some mathematical properties of the log-transformed distribution. The new regression… (More)

- Elizabeth M. Hashimoto, Edwin M. M. Ortega, Vicente G. Cancho, Gauss M. Cordeiro
- Computational Statistics & Data Analysis
- 2010

In interval-censored survival data, the event of interest is not observed exactly but is only known to occur within some time interval. Such data appear very frequently. In this paper, we are… (More)

For the first time, we propose a flexible cure rate survival model by assuming that the number of competing causes of the event of interest follows the Neyman type A distribution and the time to this… (More)

In this paper, we propose a cure rate survival model by assuming that the number of competing causes of the event of interest follows the Poisson distribution and the time to event has the… (More)

We propose a flexible cure rate survival model by assuming that the number of competing causes of the event of interest has a negative binomial distribution and the time to event has a Weibull… (More)

- Elizabeth M. Hashimoto, Edwin M. M. Ortega, Gilberto A. Paula, Mauricio Lima Barreto
- Computational Statistics & Data Analysis
- 2011

In this study, regression models are evaluated for grouped survival data when the effect of censoring time is considered in the model and the regression structure is modeled through four link… (More)