Bridge class
official_bridge
The producer supplies a revised, reconstructed, restated or overlapping history sufficient for the stated comparison use.
Release candidate · v0.2.0-rc1 · 22 Aug 2026
MENA Statistical Method Change Registry
A source-linked registry of documented changes to official statistical series: rebasing, survey redesign, classification migration, revised historical series, weighting changes and other discontinuities that can change what a time series means.
Records
15Source-verified discontinuities.
Countries
11Purposive pilot coverage.
Official bridges
7Producer bridge/reconstruction verified.
No verified bridge
5Researcher must preserve or resolve the break explicitly.
Claim boundary. These 15 cases were selected purposively because producer documentation was strong enough to support a concrete user action. The counts describe this pilot only; they are not estimates of the prevalence of statistical discontinuities or bridge provision across MENA.
What the registry records
Each case records the producer, affected series and period, documented method change, bridge class, direct-comparability decision, source links and the action a researcher should take.
Bridge class
partial_or_provisional_bridge
Some overlap or backcast exists, but it is provisional or does not resolve every comparison question.
Bridge class
no_verified_bridge
The Lab has not verified a producer-supplied bridge for the relevant transition.
Research rule
Method version travels with the observation.
A familiar series label does not erase a change in concepts, weights, classifications, sampling frames or historical treatment.
Selected cases
The full 15-record release is available in JSON and in the Series Compatibility Table.
Morocco · labour market · partial/provisional bridge
EMO2026 replaces the former ENE framework
HCP documents conceptual and methodological breaks and publishes EMO-compatible backcast indicators for 2017–2025.
Researcher action: use the EMO-compatible backcast where available; do not splice the old published ENE series directly onto EMO2026.
Saudi Arabia · CPI · official bridge
Chain-linked CPI with reconstructed history
GASTAT documents a chain-linked CPI methodology and reconstructs the series from 2013 under the new framework.
Researcher action: use the reconstructed history for current analysis and preserve earlier vintages when reconstructing what users knew at the time.
Jordan · quarterly GDP · official bridge
Historical quarterly GDP comprehensively revised
The revised history covers 2008 through Q2 2025 and expands activity detail.
Researcher action: use revised history for current analysis; retain archived vintages when reproducing older forecasts or reports.
Kuwait · business statistics · no verified bridge
Non-financial-services survey redesigned from 2002
CSB documents substantial changes to questionnaire coding, classification and the establishment frame.
Researcher action: treat 2002 as a regime boundary for detailed activity series unless a documented classification concordance is applied.
Review state
All 15 current records are source-verified against producer documentation. Independent non-author reproduction is still pending. Material disagreements and corrections will be versioned rather than silently overwritten.
Open the 15-row compatibility table → · Read Working Paper 001 → · Contribute a case →
Suggested citation
Aloreidi, L. (2026). MENA Statistical Method Change Registry, v0.2.0-rc1. MENA Open Data & Evidence Lab.