Small-Sample Corrections for Score Tests in Birnbaum-Saunders Regressions

In this article, we deal with the issue of performing accurate small-sample inference in the Birnbaum-Saunders regression model, which can be useful for modeling lifetime or reliability data. We derive a Bartlett-type correction for the score test and numerically compare the corrected test with the usual score test and some other competitors.FAPESPFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)CNPq (Brazil)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq