Erschienen in:
01.04.2008 | Poster presentation
Improved ICU risk prediction modelling using a multivariable fractional polynomial approach
verfasst von:
S Tibby, A Durward
Erschienen in:
Critical Care
|
Sonderheft 2/2008
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Excerpt
Mortality risk prediction models are used worldwide as a means of benchmarking ICU quality. Most models use logistic regression, with a cardinal assumption being linearity in the relationship between continuous predictors (for example, blood pressure) and the log odds of outcome (death). However, such linear relationships rarely exist in clinical practice. Several new statistical methods are available that allow nonlinear modelling for continuous predictors. We have applied one such method, multivariable fractional polynomials (MFP), to a paediatric ICU risk score (PIM2), to investigate whether this would improve the performance of PIM2. …