# Counterfactual Perturbation Analysis on UK Biobank Ischemic Stroke cohort Source: [Counterfactual Perturbation Analysis on UK Biobank Ischemic Stroke cohort]() Collection index: [llms.txt]() Data updated: 2026-05-14T08:05:24.379Z Evaluation of model robustness or sensitivity using counterfactual perturbation methods on the UK Biobank cohort specifically focused on Ischemic Stroke outcomes, measured by changes in specific features like tortuosity. A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage. | Scope | Recorded value | | --- | --- | | Task | Counterfactual Perturbation Analysis | | Dataset (including any stated split) | UK Biobank Ischemic Stroke cohort | | Metric | Delta on Tortuosity (4x) | | Unit | SCALAR | | Direction | Lower is better | | Results loaded | 1 of 1 | | Coverage | All results currently returned for this benchmark | Evaluation settings may differ between results. The original papers and recorded configurations are needed to establish comparability. A shared metric name alone does not establish an identical protocol. ## Metrics - [Delta on Tortuosity (4x)](): Lower is better; unit: SCALAR. ## Recorded results | Method | Delta on Tortuosity (4x) | Result date | Report paper | | --- | --- | --- | --- | | BTECF (disease-prompt) | 0.337 | Not recorded | 6a0556f3dbc836b87d828b82 | ### BTECF (disease-prompt) Delta on Tortuosity (4x): 0.337. Result ID: 6a05813747f34ce924ec5130. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"Prompting Condition":"disease-prompt","Evaluation Subset (n)":"17","Pixdrop control / Tort. ratio":"∼1/200"}. This record does not assert independent reproduction. Page 1 of 1. This is an index page, not the full collection.