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Teaching LLMs to Recommend and Defer in Underrepresented Epilepsy Care
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Proposes Manana, a non-parametric prompt-learning framework (single and multi-agent memory variants) for predicting anti-seizure medication regimens from longitudinal Ugandan clinic notes, plus Bayesian prompt averaging for confidence-based deferral.
Problem
LLM decision support for longitudinal anti-seizure medication prescribing in low-resource settings must adapt to local prescribing practice and know when to defer to specialists, but public benchmarks are dominated by high-income settings.
Approach
Learns an auditable prompt memory from prescription errors via a Predictor-Inspector-Architect loop with quorum-gated updates across patients, and treats the learned prompt trajectory as a Bayesian model average to produce prescription probabilities and deferral signals.
Key results
- On Cohort B, Manana-Multi reaches 99% top-1 precision on the most confident 25% of cases and 95% on the most confident 50%.
- Manana-Multi achieves the highest monotherapy EM@3 on Cohort A (89.7/95.3/97.0 across V1-V3), outperforming DSPy (GEPA) and TextGrad.
- BPA improves Top-1 accuracy over majority vote on the same Manana-Multi trajectory (70% vs 66% on Cohort A; 75% vs 73% on Cohort B) while Top-3 is unchanged.
Surprising findings
- A previous-regimen copy baseline reaches 85.1% EM@3 on Cohort A later visits, a strong continuation floor that most methods do not exceed on Cohort B.
- DSPy with GEPA beats Manana-Single on several monotherapy and polytherapy cells, so Manana is not uniformly best.
Limitations
- BPA gives a retrospective confidence score; deferral thresholds were chosen on held-out data and are not deployment-ready.
- Endpoint is agreement with physician-selected regimen, not clinical optimality or seizure outcome.
- Results rely on a single base model in main experiments and a small 50-patient training set.
Experimental setup
Datasets: Ugandan pediatric epilepsy Cohort A (332 patients, 1,040 visits) Ugandan pediatric epilepsy Cohort B (367 patients, 1,509 visits) MIMIC-IV (reproducibility check)
Benchmarks: Ugandan Cohort A held-out (EM@3) Ugandan Cohort B transfer (EM@3)
Metrics: EM@3 Top-1 accuracy Jaccard similarity precision at coverage confidence gap
Baselines: EpiPick Naive Bayes XGBoost Base Prompt Single-agent prompt DSPy (GEPA) ExpeL TextGrad Consilium
Builds on: TextGrad ExpeL DSPy GEPA
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