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Related Concept Videos

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The interval estimate of any variable is known as the prediction interval. It helps decide if a point estimate is dependable.
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Intravital microscopy allows the study of dynamic biological processes such as tissue regeneration and tumor development. The calvarial bone marrow, a highly dynamic tissue, offers insights into hematopoiesis and vascular function. Using a biocompatible 3D-printed head fixation implant allows for repetitive longitudinal imaging, enhancing our understanding of tissue dynamics and the tumor...
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Related Experiment Video

Updated: Jan 20, 2026

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Dynamic prediction of interval-censored failure time data with longitudinal marker.

Yang-Jin Kim1

  • 1Department of statistics, Sookmyung womens' University, South Korea.

Statistical Methods in Medical Research
|January 19, 2026
PubMed
Summary

This study introduces dynamic measures to evaluate patient prognosis prediction using longitudinal markers and interval-censored failure time data. The new methods improve accuracy for predicting events like dementia.

Keywords:
Brier scoredynamic area under curveinterval-censored datajoint modellandmarking approachlongitudinal marker

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Area of Science:

  • Biostatistics
  • Clinical Epidemiology
  • Longitudinal Data Analysis

Background:

  • Accurate patient prognosis prediction is crucial for clinical decision-making.
  • Existing prediction models need to dynamically update with evolving patient conditions.
  • Joint models for longitudinal markers and time-to-event data are common but require methods for dynamic evaluation.

Purpose of the Study:

  • To develop dynamic measures for assessing the predictive accuracy of longitudinal markers.
  • To address the challenge of interval-censored failure time data in prognostic modeling.
  • To evaluate prediction performance in a real-world dementia prediction scenario.

Main Methods:

  • Proposed novel dynamic area under the curve and Brier score metrics.
  • Incorporated the specific data structure of interval-censored failure time data.
  • Conducted simulation studies comparing joint modeling and landmarking approaches.

Main Results:

  • The proposed dynamic measures effectively reflect the incomplete data structure.
  • Simulation results demonstrated the performance of the joint model compared to landmarking.
  • The methods were successfully applied to predict dementia using cognitive scores.

Conclusions:

  • Dynamic evaluation metrics are essential for updating prognostic models.
  • The proposed methods offer a robust way to assess predictive accuracy with interval-censored data.
  • This approach enhances the prediction of clinical events, such as dementia onset.