The Annals of Applied Statistics
- Ann. Appl. Stat.
- Volume 11, Number 3 (2017), 1787-1809.
Dynamic prediction for multiple repeated measures and event time data: An application to Parkinson’s disease
In many clinical trials studying neurodegenerative diseases such as Parkinson’s disease (PD), multiple longitudinal outcomes are collected to fully explore the multidimensional impairment caused by this disease. If the outcomes deteriorate rapidly, patients may reach a level of functional disability sufficient to initiate levodopa therapy for ameliorating disease symptoms. An accurate prediction of the time to functional disability is helpful for clinicians to monitor patients’ disease progression and make informative medical decisions. In this article, we first propose a joint model that consists of a semiparametric multilevel latent trait model (MLLTM) for the multiple longitudinal outcomes, and a survival model for event time. The two submodels are linked together by an underlying latent variable. We develop a Bayesian approach for parameter estimation and a dynamic prediction framework for predicting target patients’ future outcome trajectories and risk of a survival event, based on their multivariate longitudinal measurements. Our proposed model is evaluated by simulation studies and is applied to the DATATOP study, a motivating clinical trial assessing the effect of deprenyl among patients with early PD.
Ann. Appl. Stat. Volume 11, Number 3 (2017), 1787-1809.
Received: July 2016
Revised: March 2017
First available in Project Euclid: 5 October 2017
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Wang, Jue; Luo, Sheng; Li, Liang. Dynamic prediction for multiple repeated measures and event time data: An application to Parkinson’s disease. Ann. Appl. Stat. 11 (2017), no. 3, 1787--1809. doi:10.1214/17-AOAS1059. https://projecteuclid.org/euclid.aoas/1507168848
- Web supplement: Web-based supporting materials. The web-based supporting materials include additional results and figures discussed in the main text, Stan code for the simulation study and a screenshot of the online calculator.