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Link-based survival additive models under mixed censoring to assess risks of hospital-acquired infections. (English) Zbl 1510.62446

Summary: The majority of methods available to model survival data only deal with right censoring. However, there are many applications where left, right and/or interval censoring simultaneously occur. A methodology that is capable of handling all types of censoring as well as flexibly estimating several types of covariate effects is presented. The baseline hazard is modelled through monotonic P-splines. The model’s parameters are estimated using an efficient and stable penalised likelihood algorithm. The proposed framework is evaluated in simulation, and illustrated using an original data example on time to first hospital infection or in-hospital death in cirrhotic patients. A peak of risk in the first week since hospitalisation is identified, together with a non-linear effect of Model for End-Stage Liver Disease (MELD) score. The package, with an implementation of our approach, is freely available on CRAN.

MSC:

62P10 Applications of statistics to biology and medical sciences; meta analysis
62N01 Censored data models

Software:

GJRM; R; gamair
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References:

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