Notes

One checked finding a week

Each note rests on a number from the re-runnable benchmark or on the official ETL's own SQL. The newest is first.

• 2026-11-14 Why a Synthea procedures.csv row can land in Observation or Drug
  Rests on: checked line by line against OHDSI ETL-Synthea v5.4 SQL (commit e59d1c7)
• 2026-11-14 Benchmark run: 98.4% label-only, 99.4% visits
  Rests on: proof/results/latest.json, 253 of 256 data-quality checks, re-runnable in one command