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METHODOLOGY
Every methodology we publish carries a version identifier. This page is the version history for each one — see /corrections for incidents where a specific mapping or run was wrong, as opposed to the methodology itself changing.
← Back to methodologyInitial release. No prior version exists to compare against — this is the methodology as first published, described in full on /methodology.
Initial release. No prior version exists to compare against — this is the methodology as first published, described in full on /methodology.
When a computation method changes, it gets a new version identifier and a documented backfill of affected records — we never silently rewrite historical figures. This page will be updated the moment either version above changes.