# Preventative Health Bench

> Independent analysis of Oexner et al.’s UK Biobank survival-model benchmark: disease endpoints, feature regimes, nested validation, C-index results and calibration limits.

We examine a specific published benchmark of survival models for incident disease risk in UK Biobank. Its three endpoints and five feature regimes make the comparison concrete. Our original guides and condition explorer explain what discrimination measures and what remains unknown about calibration, transport and prevention decisions. This is analysis of Oexner and colleagues’ study, not a new dataset, a risk calculator or an intervention trial.

## Provenance
Independent analysis published by Arcophos. Benchmark creation belongs to the credited authors. Result rows are selected paper-reported measurements with their source versions and evaluation conditions, not new Arcophos runs or a live leaderboard.

## Benchmark dossiers
- [UK Biobank survival-model benchmark by Oexner et al.](https://preventativehealthbench.com/benchmarks/ukb-survival/): Ranking future risk is only one part of a prevention decision. Source version: 2026 accepted journal manuscript.

## Original analyses
- [A concrete prevention benchmark: the UK Biobank survival-model study](https://preventativehealthbench.com/guides/uk-biobank-prevention-benchmark/): Analyze a published risk-prediction comparison without inventing a new prevention dataset.
- [Why the endpoint and feature set belong beside a survival-model ranking](https://preventativehealthbench.com/guides/survival-benchmark-feature-and-endpoint-matrix/): Use the UK Biobank study to make model comparisons conditional and reproducible.
- [A C-index is not a calibrated prevention threshold](https://preventativehealthbench.com/guides/c-index-is-not-calibrated-risk/): Explain rank discrimination, censoring and absolute-risk calibration using the published survival benchmark.

## Inspect the evidence
- [Evidence JSON](https://preventativehealthbench.com/evidence.json): Task definitions, dataset facts, scoring rules, source-version results, our interpretations, and reference IDs.
- [Sources](https://preventativehealthbench.com/sources/): Original papers and repositories with evidence locators.
- [Editorial method](https://preventativehealthbench.com/methodology/): Source reconciliation and interpretation boundaries.
- [About](https://preventativehealthbench.com/about/): Ownership and corrections.

Analysis updated: 2026-09-28