Source. The National Practitioner Data Bank public-use file. Reporting a malpractice payment made on behalf of a practitioner is mandatory under 45 CFR Part 60, which makes this close to a census of paid US malpractice claims rather than a sample — 263,622 payments in the study window, $85.66B in total.
Why the window starts in 2005. NPDB did not publish the severity-of-outcome field before 2004: all 250,672 rows from 1990–2003 have it blank, and 2004 is still 12% incomplete. From 2005 there is not one gap. Running a severity analysis across the whole file would compare a coded era against an uncoded one, so the export refuses to run if any row in the window lacks a code.
Unit of analysis. One row is one payment reported for one practitioner. An incident involving several practitioners produces several reports, so payment counts exceed incident counts. We use the practitioner-attributable payment field and deliberately do not sum the combined total_payment field, which would double-count multi-practitioner settlements.
Medians, not averages. Malpractice payments are extremely right-skewed — the mean death payment ($361,804) sits well above the median ($235,000) because of a small number of very large settlements. Every headline here is a median.
What this study does not claim. Not that the legal system values life cheaply in principle, and not a causal estimate of any single statute. A settlement figure measures legally recoverable damages, not the worth of a life. State is the practitioner’s work state rather than the court’s jurisdiction — usually the same, not guaranteed.
The aggregated data is published as open CSVs under CC BY 4.0. Analysis by Settlement Insight Research.