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Theory and methods
Comparison of methods for modelling a count outcome with excess zeros: application to Activities of Daily Living (ADL-s)
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- Published on: 27 April 2016
- Published on: 27 April 2016Good fit, but still the wrong model? Understanding data generation matters more than likelihood-based model-fit statistics.We read with interest the article describing methods for modelling count data with excess zeros compared to standard count distributions, such as Poisson1. This topic has been extensively discussed in the statistical and epidemiological literature2-3. Didactic messages given by statisticians can often lack an appreciation of the epidemiological context and sadly this article has the same shortcomings. The primary novelty is t...Show MoreConflict of Interest:
None declared.