๐”– Bobbio Scriptorium
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Choosing among generalized linear models applied to medical data

โœ Scribed by J. K. Lindsey; B. Jones

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
700 KB
Volume
17
Category
Article
ISSN
0277-6715

No coin nor oath required. For personal study only.

โœฆ Synopsis

When testing for a treatment effect or a difference among groups, the distributional assumptions made about the response variable can have a critical impact on the conclusions drawn. For example, controversy has arisen over transformations of the response (Keene). An alternative approach is to use some member of the family of generalized linear models. However, this raises the issue of selecting the appropriate member, a problem of testing non-nested hypotheses. Standard model selection criteria, such as the Akaike information criterion (AIC), can be used to resolve problems. These procedures for comparing generalized linear models are applied to checking for difference in T cell counts between two disease groups. We conclude that appropriate model selection criteria should be specified in the protocol for any study, including clinical trials, in order that optimal inferences can be drawn about treatment differences.

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