# Counterfactual Perturbation Analysis on UK Biobank Diabetic Retinopathy (DR) primary cohort

Source: [Counterfactual Perturbation Analysis on UK Biobank Diabetic Retinopathy (DR) primary cohort](<https://www.sota2.com/research/sota/counterfactual-perturbation-analysis-on-uk-biobank-diabetic-retinopathy-dr-primary-cohort>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2026-05-14T08:05:24.342Z

Evaluation of model robustness and fairness using counterfactual perturbation analysis techniques on the primary cohort data from the UK Biobank Diabetic Retinopathy (DR) dataset, assessed via changes in specific feature deltas (e.g., 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 Diabetic Retinopathy (DR) primary cohort |
| Metric | Tortuosity Delta (4x) |
| Unit | SCALAR |
| Direction | Lower is better |
| Results loaded | 2 of 2 |
| 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

- [Tortuosity Delta (4x)](<https://www.sota2.com/research/sota/counterfactual-perturbation-analysis-on-uk-biobank-diabetic-retinopathy-dr-primary-cohort.md?metric=Tortuosity%20Delta%20(4x)>): Lower is better; unit: SCALAR.

## Recorded results

| Method | Tortuosity Delta (4x) | Result date | Report paper |
| --- | --- | --- | --- |
| BTECF (DR-prompt) | 0.311 | Not recorded | 6a0556f3dbc836b87d828b82 |
| BTECF (Uncond) | 0.625 | Not recorded | 6a0556f3dbc836b87d828b82 |

### BTECF (DR-prompt)

Tortuosity Delta (4x): 0.311. Result ID: 6a05813747f34ce924ec512f.

[Reporting paper](<https://www.sota2.com/research/paper/6a0556f3dbc836b87d828b82.md>)

[Method origin paper](<https://www.sota2.com/research/paper/6a0556f3dbc836b87d828b82.md>)

Recorded evaluation configuration: {"Prompting Condition":"DR-prompt","Evaluation Subset (n)":"97 / 190","Pixdrop control / Tort. ratio":"∼1/18–1/25"}. This record does not assert independent reproduction.

### BTECF (Uncond)

Tortuosity Delta (4x): 0.625. Result ID: 6a05813747f34ce924ec512e.

[Reporting paper](<https://www.sota2.com/research/paper/6a0556f3dbc836b87d828b82.md>)

[Method origin paper](<https://www.sota2.com/research/paper/6a0556f3dbc836b87d828b82.md>)

Recorded evaluation configuration: {"Prompting Condition":"Unconditional","Evaluation Subset (n)":"97 / 190","Pixdrop control / Tort. ratio":"∼1/18–1/25"}. This record does not assert independent reproduction.

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