2017
DOI: 10.1016/j.csda.2016.10.001
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A new class of defective models based on the Marshall–Olkin family of distributions for cure rate modeling

Abstract: Defective distributions model cure rates by changing the usual domain of its parameters in a way that their survival functions converge to a value p ∈ (0, 1). A new way to generate defective distributions to model cure fractions is proposed. The new way relies on a property derived from the Marshall Olkin family of distributions. To exemplify this new result we use the extended Weibull distribution and introduce ten new defective distributions. A regression approach for these models is also proposed. Estimatio… Show more

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Cited by 29 publications
(20 citation statements)
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“…This algorithm is similar to that presented by Rocha et al (2017). An R function for generating random samples based on these steps is presented in the Appendix.…”
Section: A Simulation Methods For a Random Variable With A Modified Gomentioning
confidence: 99%
See 1 more Smart Citation
“…This algorithm is similar to that presented by Rocha et al (2017). An R function for generating random samples based on these steps is presented in the Appendix.…”
Section: A Simulation Methods For a Random Variable With A Modified Gomentioning
confidence: 99%
“…In this paper we propose Bayesian and frequentist approaches to a model based on the modified Gompertz distribution, considering survival data in presence of a cure fraction. More recently a number of new families of defective distributions have been proposed in the literature, such as those based on the Kumaraswamy Rocha et al (2015) and the Marshall-Olkin families Rocha et al (2017). However, in the present study, the modified Gompertz distribution was preferred because of its computational simplicity and the ease of interpretation of their parameters.…”
Section: Introductionmentioning
confidence: 94%
“…(); Borges (); dos Santos, Achcar, and Martinez (); Martinez and Achcar (); Rocha et al. (, ) and Martinez and Achcar ().…”
Section: Introductionmentioning
confidence: 98%
“…Defective models offer one strategy for modeling interval‐censored data in the context of a cured fraction. Balka, Desmond, and McNicholas (, ) and Rocha, Nadarajah, Tomazella, and Louzada (, ); Rocha, Nadarajah, Tomazella, Louzada, and Eudes (); Scudilio et al. () recently popularized the term “defective,” although previous papers had used the same idea.…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation