patient-world-models

EHR2Trace is a configurable system that converts heterogeneous electronic health records into source-linked, auditable patient events exported to OMOP and MEDS, separating event time from information availability. Across three clinical datasets it converted 846.4M events and detected all 28 injected faults, while showing availability-filtered training improves held-out AUROC (0.829 vs 0.642) and exposing inflated performance (0.965 AUROC) from backdated histories.