Answers are grounded in this paper and cite their sources.
Analysis explores usability issues of Korn and Simon’s explained variation measure for survival data, suggesting improvements.
Among many proposals to estimate proportion of explained variation for survival data, Korn and Simon's measure is the only one actually looking at the variation of time. While this should be an advantage, its usage, as measured by citations, suggests otherwise. We look at some possible reasons for this. We find one, serious, but easily corrected, deficiency of the measure, and another property, which is natural, but not very practical when there are censored data.
No takes yet. Share an insight, caveat, or question.
Stare et al. (2025) studied this question.
Synapse has enriched 8 closely related papers on similar clinical questions. Consider them for comparative context: