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Functional varying-coefficient Cox model and its application
Fansheng Kong1, Maozai Tian1,2, Zhihao Wang2
1Center for Applied Statistics, School of Statistics, Renmin University of China, PR China.
None:
When data become increasingly complex, desirable models are required to be more flexible for analyzing survival data. Building upon the existing functional Cox model, we introduce a novel functional varying-coefficient Cox model and the corresponding estimation algorithms are proposed in this article. The proposed model can simultaneously handle survival data with varying-coefficient covariates and functional covariates, thereby significantly enhancing the adaptability of survival models. The model performance is evaluated by simulation studies, and a real application using Alzheimer's disease neuroimaging initiative (ADNI) data is used to illustrate the practicality of the proposed model.
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