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  • Title: Statistical procedures for analyzing mental health services data.
    Author: Elhai JD, Calhoun PS, Ford JD.
    Journal: Psychiatry Res; 2008 Aug 15; 160(2):129-36. PubMed ID: 18585790.
    Abstract:
    In mental health services research, analyzing service utilization data often poses serious problems, given the presence of substantially skewed data distributions. This article presents a non-technical introduction to statistical methods specifically designed to handle the complexly distributed datasets that represent mental health service use, including Poisson, negative binomial, zero-inflated, and zero-truncated regression models. A flowchart is provided to assist the investigator in selecting the most appropriate method. Finally, a dataset of mental health service use reported by medical patients is described, and a comparison of results across several different statistical methods is presented. Implications of matching data analytic techniques appropriately with the often complexly distributed datasets of mental health services utilization variables are discussed.
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