US Drug Adverse-Event Spike Index (FAERS z-score) - derived Parquet
How abnormal each drug's adverse-event reporting is now: the z-score of monthly FAERS counts against the drug's own trailing 24-month baseline. |z| ≥ 3 = a 3σ safety-signal surge. Pre-computed from the FAERS monthly-counts product.
U.S. Food and Drug Administration - openFDA (FAERS)