Article

The impact of the number and the size of clusters on prediction performance of the stratified and the conditional shared gamma frailty Cox proportional hazards models

2025-10-19

Abstract excerpt

Researchers in biomedical research often analyse data that are subject to clustering. Development and validation of risk prediction models generally assumes independence of observations. For survival outcomes, the Cox proportional hazards regression model is commonly used to estimate an individual’s risk at fixed time horizons. The stratified Cox proportional hazards and the shared gamma frailty Cox proportional h...

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Literature Corpus work: e6ab338f-a5c8-5cb0-9da8-0621ed7ffe01
DOI: 10.1101/2025.10.17.25338219

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