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1

Institute of Advanced Studies, Charles Darwin University, Darwin NT 0909, Australia

2

Health Gains Planning Branch, Department of Health and Families, NT 0801, Australia

3

School of Public Health, Curtin Health Innovation Research Institute, Curtin University of Technology, WA 6845, Australia





*

Author to whom correspondence should be addressed.



Abstract This paper aims to provide direct and indirect evidence on setting up rules for applications of the empirical Bayes shrinkage EBS, and offers cautionary remarks concerning its applicability. In epidemiology, there is still a lack of relevant criteria in the application of EBS. The bias of the shrinkage estimator is investigated in terms of the sums of errors, squared errors and absolute errors, for both total and individual groups. The study reveals that assessing the underlying exchangeability assumption is important for appropriate use of EBS. The performance of EBS is indicated by a ratio statistic f of the between-group and within-group mean variances. If there are significant differences between the sample means, EBS is likely to produce erratic and even misleading information. View Full-Text

Keywords: analysis of variance; computer simulation; reliability and validity; statistical bias; statistical data analysis analysis of variance; computer simulation; reliability and validity; statistical bias; statistical data analysis





Autor: Yuejen Zhao 1,2,* , Andy H. Lee 3 and Tony Barnes 1

Fuente: http://mdpi.com/



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