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News/The C-index illusion: discrimination without calibration in published survival models
arxiv
PublishedSeptember 14, 2026 at 4:00 AM
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The C-index illusion: discrimination without calibration in published survival models

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arXiv:2607.19526v3 Announce Type: replace Abstract: Recent work has argued normatively, on synthetic data, that evaluating survival models by discrimination alone (concordance index) yields systematically misleading model comparisons, because the metric ignores calibration and time-dependent accurac

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