{
  "schema_version": "0.3",
  "release_version": "0.2.0-rc1",
  "title": "MENA Statistical Method Change Registry",
  "released": "2026-08-22",
  "record_count": 15,
  "country_count": 11,
  "status": "release-candidate; external review pending",
  "claim_boundary": "This is a purposive, source-verified pilot of documented statistical method and series breaks. It is not representative of all MENA official statistics, is not a ranking of statistical agencies, and does not treat methodological change as evidence of poor quality.",
  "bridge_class_vocabulary": {
    "official_bridge": "The producer supplies a revised, reconstructed, restated or overlapping historical series sufficient for the stated comparison use.",
    "partial_or_provisional_bridge": "The producer supplies some overlap/backcast/multiple-base history, but the bridge is provisional or does not resolve every comparison question.",
    "no_verified_bridge": "The Lab has not verified a producer-supplied bridge for the relevant regime transition."
  },
  "records": [
    {"id":"SAU-NATIONAL-ACCOUNTS-2025-COMPREHENSIVE-REVISION","country":"Saudi Arabia","series":"National accounts / GDP","domain":"national_accounts","effective_period":"2023 comprehensive revision; chain-linking introduced for real GDP in 2024","producer":"General Authority for Statistics (GASTAT)","change_type":["comprehensive_revision","method_regime_change","source_expansion"],"documented_changes":["2023 selected as the comprehensive revision year","expanded and updated data sources and coverage","updated classifications and methodological treatments","chain-linking methodology introduced for real GDP in 2024"],"bridge_class":"official_bridge","bridge_status":"official revised historical series available","direct_comparability":"method_version_required","user_action":"Use the revised series for current analysis; preserve archived pre-revision vintages for real-time or historical-information-set analysis.","source_urls":["https://www.stats.gov.sa/en/w/frequently-asked-questions-gdp-comprehensive-revision","https://www.stats.gov.sa/en/w/revisions-and-revision-policy"],"review_status":"source-verified"},
    {"id":"JOR-QUARTERLY-GDP-2025-COMPREHENSIVE-REVISION","country":"Jordan","series":"Quarterly GDP","domain":"national_accounts","effective_period":"quarterly series from 2008 through Q2 2025","producer":"Department of Statistics","change_type":["comprehensive_revision","classification_change","historical_series_revision"],"documented_changes":["new comprehensive revision applied to quarterly GDP estimates from 2008 through Q2 2025","ISIC Rev.4 adopted","economic-sector detail expanded from 14 to 20 sectors"],"bridge_class":"official_bridge","bridge_status":"official revised historical series available","direct_comparability":"method_version_required","user_action":"Use the revised historical series for current trend analysis. Preserve and label archived pre-revision releases when reproducing older forecasts, reports or decisions.","source_urls":["https://dosweb.dos.gov.jo/nationalaccount/quarterly-estimates/","https://dosweb.dos.gov.jo/nationalaccount/quarterly-estimates/tables_quarterly/"],"review_status":"source-verified"},
    {"id":"MAR-LABOUR-2026-EMO","country":"Morocco","series":"Labour-force survey / unemployment","domain":"labour_market","effective_period":"Q1 2026 onward","producer":"Haut-Commissariat au Plan (HCP)","change_type":["survey_replacement","concept_change","sample_redesign","sampling_frame_update","rotation_design_change"],"documented_changes":["EMO2026 replaced the former ENE labour survey","employment restricted to work for pay or profit","strict unemployment replaces the previous broader unemployment concept","labour underutilization expanded into a multidimensional indicator system","annual household sample increased from 90,000 to 135,000","sampling frame updated using the 2024 population and housing census","new quarterly and annual household rotation design introduced"],"bridge_class":"partial_or_provisional_bridge","bridge_status":"provisional EMO-compatible backcast indicators available for 2017-2025","direct_comparability":"no_with_old_ENE; yes_with_official_backcast_where_available","user_action":"For comparisons with 2026, use the EMO-compatible 2017–2025 backcast indicators where available. Do not splice 2026 EMO values directly onto the previously published ENE series.","source_urls":["https://www.hcp.ma/Situation-du-marche-du-travail-au-Maroc-au-deuxieme-trimestre-de-2026-a-partir-de-la-nouvelle-enquete-sur-la-main-d_a4342.html"],"review_status":"source-verified; producer review requested"},
    {"id":"TUN-REAL-ESTATE-PRICE-2024-METHOD-REVISION","country":"Tunisia","series":"Residential real-estate price index","domain":"prices","effective_period":"publication interrupted during 2022-2023; publication resumed with Q1 2024 release","producer":"Institut National de la Statistique (INS)","change_type":["method_revision","publication_interruption"],"documented_changes":["quarterly publication was interrupted during 2022 and 2023 while calculation procedures were revised","publication resumed with the Q1 2024 release","INS states the methodological work was intended to improve statistical quality and better reflect short-term property-price dynamics"],"bridge_class":"official_bridge","bridge_status":"revised values for 2022-2023 are published in the current INS table","direct_comparability":"use_current_revised_series","user_action":"Use the currently published revised series for 2022-2024 trend analysis. Preserve older pre-revision vintages if reproducing analysis made before the methodological revision.","source_urls":["https://ins.tn/publication/indice-des-prix-de-limmobilier-premier-trimestre-2024","https://ins.tn/methode/fiche-technique-de-lindice-des-prix-de-limmobilier-ipim-0"],"review_status":"source-verified"},
    {"id":"EGY-CPI-2019-TENTH-SERIES","country":"Egypt","series":"Consumer Price Index","domain":"prices","effective_period":"October 2019 onward","producer":"Central Agency for Public Mobilization and Statistics (CAPMAS)","change_type":["base_year_change","new_index_series"],"documented_changes":["the tenth CPI series was introduced from October 2019","2018/2019 adopted as the base period","the change replaced the preceding CPI series/base regime"],"bridge_class":"no_verified_bridge","bridge_status":"historical bridge treatment not yet verified from the producer metadata reviewed by the Lab","direct_comparability":"growth_rates_may_be_comparable; index_levels_require_base_alignment","user_action":"For long historical CPI work, identify the CPI series/base regime explicitly. Do not compare index levels across base regimes without rebasing or using an official linked series; prefer inflation rates when the producer supports continuity.","source_urls":["https://censusinfo.capmas.gov.eg/Metadata-Ar-v4.2/index.php/catalog/1618/overview"],"review_status":"source-verified"},
    {"id":"SAU-CPI-2025-CHAIN-LINKED-2023-REFERENCE","country":"Saudi Arabia","series":"Consumer Price Index","domain":"prices","effective_period":"updated methodology documented 2025; reconstructed series from 2013; reference year 2023=100","producer":"General Authority for Statistics (GASTAT)","change_type":["chain_linking","annual_weight_update","classification_update","reference_year_change","historical_reconstruction"],"documented_changes":["CPI moved to chain-linked methodology with annual weight updates","2023 used as the presentation reference year (2023=100)","COICOP 2018 used in the reconstructed series","historical CPI reconstructed from 2013 under the new methodology"],"bridge_class":"official_bridge","bridge_status":"official reconstructed series from 2013 available","direct_comparability":"yes_with_reconstructed_series","user_action":"Use GASTAT's reconstructed 2013-present CPI series for current historical analysis. Preserve earlier fixed-base vintages only when reconstructing the information available at the time.","source_urls":["https://www.stats.gov.sa/en/w/methodology-and-quality-report-of-consumer-price-index"],"review_status":"source-verified"},
    {"id":"JOR-CPI-2020-BASE-2018","country":"Jordan","series":"Consumer Price Index","domain":"prices","effective_period":"January 2020 publication onward; historical tables include 2018=100 and 2010=100 series","producer":"Department of Statistics","change_type":["base_year_change","weight_update"],"documented_changes":["base year updated from 2010 to 2018","new expenditure structure based on the 2018 Household Income and Expenditure Survey","DoS historical tables publish CPI under both 2018=100 and 2010=100 for earlier years"],"bridge_class":"official_bridge","bridge_status":"official historical tables expose both base regimes for overlapping years","direct_comparability":"yes_after_base_alignment","user_action":"Use one consistent base regime when comparing index levels. DoS provides historical 2018=100 values, so prefer those for a continuous current series rather than manually splicing 2010=100 and 2018=100 levels.","source_urls":["https://dosweb.dos.gov.jo/cpi_02_2020/","https://dosweb.dos.gov.jo/economic/price-indices/table-price-indices/"],"review_status":"source-verified"},
    {"id":"TUN-CPI-2015-BASE-REFORM","country":"Tunisia","series":"Consumer Price Index","domain":"prices","effective_period":"2015-base CPI replacing 2010-base CPI","producer":"Institut National de la Statistique (INS)","change_type":["base_year_change","weight_update","basket_update","geographic_coverage_update","collection_method_update"],"documented_changes":["base 2015 CPI replaced the base 2010 CPI","weights revised using the 2015-2016 household budget and consumption survey","product sample and varieties updated","price observation expanded for some products across the geographic field","outlet list updated and mobile price collection introduced"],"bridge_class":"partial_or_provisional_bridge","bridge_status":"INS publishes CPI evolution under multiple base years and a current 2015=100 series; a full producer-documented link protocol has not yet been coded by the Lab","direct_comparability":"yes_after_base_alignment","user_action":"For index-level comparisons, use a single INS-published base series. Treat the 2015 reform as more than a mechanical rescaling because weights, product coverage, outlets and collection procedures also changed.","source_urls":["https://www.ins.tn/methode/methodologie-de-lindice-des-prix-la-consommation-familiale-base-100-en-2015","https://www.ins.tn/statistiques/90"],"review_status":"source-verified"},
    {"id":"OMN-CPI-2018-BASE-UPDATE","country":"Oman","series":"Consumer Price Index","domain":"prices","effective_period":"current CPI base updated to 2018 from 2012","producer":"National Centre for Statistics and Information (NCSI)","change_type":["base_year_change","weight_update"],"documented_changes":["CPI base year updated from 2012 to 2018","current weights draw on Household Expenditure and Income Survey information for 2018 and 2019","current CPI covers all governorates"],"bridge_class":"no_verified_bridge","bridge_status":"current official series is presented on 2018 base; producer guidance for splicing archived 2012-base levels has not yet been verified","direct_comparability":"growth_rates_preferred_across_unbridged_base_regimes","user_action":"Use the official 2018-base series for current analysis. Do not splice raw index levels from the archived 2012-base series without an official link or explicit rebasing.","source_urls":["https://api.ncsi.gov.om/uploads/pdfs/statistical_year_book_2026___issue_54_1777963604.pdf","https://api.ncsi.gov.om/uploads/keyindicators/inflation_1768902203.pdf"],"review_status":"source-verified"},
    {"id":"QAT-CPI-2020-BASE-2018","country":"Qatar","series":"Consumer Price Index","domain":"prices","effective_period":"January 2020 onward","producer":"Planning and Statistics Authority (PSA)","change_type":["base_year_change","weight_update","historical_restatement"],"documented_changes":["starting January 2020 the CPI base year changed from 2013 to 2018","2018 weights reflect the 2018 Household Income and Expenditure Survey","subsequent PSA publications present historical 2017-2020 CPI on the 2018=100 basis"],"bridge_class":"official_bridge","bridge_status":"official 2018-base historical values are published for pre-2020 years","direct_comparability":"yes_with_official_2018_base_history","user_action":"Use the PSA's 2018-base history for trend work spanning the 2020 change. Preserve the former 2013-base releases when reproducing contemporaneous pre-2020 analysis.","source_urls":["https://www.psa.gov.qa/en/knowledge/Doc/QEO/Qatar-Economic-Outlook-2020-2022-En.pdf","https://www.psa.gov.qa/en/statistics/Statistical%20Releases/General/QIF/Qatar_in_Figures_36_2021_EN.pdf"],"review_status":"source-verified"},
    {"id":"UAE-CPI-2014-WEIGHT-UPDATE","country":"United Arab Emirates","series":"Consumer Price Index","domain":"prices","effective_period":"weights updated from the 2007 regime to weights derived from the 2014-2015 Household Income and Expenditure Survey","producer":"Federal Competitiveness and Statistics Centre (FCSC)","change_type":["weight_update","basket_update"],"documented_changes":["the UAE CPI originally adopted 2007 as the base year with weights derived from the 2007 Household Income and Expenditure Survey","FCSC technical notes state that CPI weights were later updated from 2007 to 2014","the updated weights were derived from the Household Income and Expenditure Survey conducted from June 2014 to May 2015","the 2014 basket includes about 1,200 goods and services and price collection from about 500 outlets"],"bridge_class":"no_verified_bridge","bridge_status":"the method documents verify the old and new weighting regimes, but the Lab has not yet verified a producer-published historical bridge between them","direct_comparability":"inflation_rates_require_method_version; raw_index_levels_require_base_alignment","user_action":"Record the weighting regime when using UAE CPI historically. Do not assume a fixed consumer basket across the 2007-to-2014 weight update; use producer-published current history where available and preserve old vintages for real-time reconstruction.","source_urls":["https://fcsc.gov.ae/wp-content/uploads/2025/04/%D8%A7%D9%84%D8%A3%D8%B1%D9%82%D8%A7%D9%85-%D8%A7%D9%84%D9%82%D9%8A%D8%A7%D8%B3%D9%8A%D8%A9-2010-1.pdf","https://fcsc.gov.ae/wp-content/uploads/2025/06/CPI-methodology-2025-En.pdf"],"review_status":"source-verified"},
    {"id":"BHR-CPI-2014-15-WEIGHT-REGIME","country":"Bahrain","series":"Consumer Price Index","domain":"prices","effective_period":"current methodology uses HIES 2014/2015 weights; exact transition release date requires producer confirmation","producer":"Information & eGovernment Authority (iGA)","change_type":["weight_update","basket_update"],"documented_changes":["November 2018 CPI documentation used a 2006=100 index and a basket based on HIES 2005/2006 with 476 weighted commodities","2023 CPI methodology states that the main source of weights is HIES 2014/2015","the current basket documented in 2023 contains 578 elementary aggregates","detailed elementary weights were also checked and adjusted using sales and administrative data where available"],"bridge_class":"no_verified_bridge","bridge_status":"the Lab has verified the old and newer weighting regimes but not yet the exact transition date or producer-published linked historical series","direct_comparability":"method_version_required","user_action":"Do not describe Bahrain CPI over this transition as a single fixed-weight basket. Record the weight regime and seek the producer's linked/current historical series before comparing index levels across regimes.","source_urls":["https://www.iga.gov.bh/en/article/increase-of-november-2018-consumer-price-index-by-0-7","https://www.iga.gov.bh/Media/Others/Statistical%20Publications/Economic%20Statistics/CPI/CPI_%D9%90%20%D9%90Sep%202023.pdf"],"review_status":"source-verified; transition date pending producer confirmation"},
    {"id":"LBN-CPI-2008-BASE-DEC2007","country":"Lebanon","series":"Consumer Price Index","domain":"prices","effective_period":"new CPI base December 2007=100 introduced for 2008 reporting, replacing the December 1998=100 regime","producer":"Central Administration of Statistics (CAS)","change_type":["base_period_change","weight_update","classification_update"],"documented_changes":["CAS national-accounts tables show the earlier CPI on a December 1998=100 base through 2007","the same official table presents the new December 2007=100 CPI for 2008","the expenditure-group weights differ materially between the two regimes"],"bridge_class":"partial_or_provisional_bridge","bridge_status":"official CAS material exposes both regimes around the transition, but the Lab has not yet coded a complete linked historical series","direct_comparability":"yes_after_base_alignment_and_weight_regime_review","user_action":"Do not compare raw index levels from the December 1998 and December 2007 bases. Use one CAS-published base regime or an explicit rebasing/linking procedure, and record the weight regime.","source_urls":["https://cas.gov.lb/images/PDFs/National%20Accounts/pcm/2008%20EN.pdf","https://cas.gov.lb/images/PDFs/CPI_JULY_2012.pdf"],"review_status":"source-verified"},
    {"id":"LBN-NATIONAL-ACCOUNTS-2022-23-REVISION","country":"Lebanon","series":"Annual national accounts","domain":"national_accounts","effective_period":"2022-2023 release with revisions to previous years' estimates","producer":"Central Administration of Statistics (CAS)","change_type":["historical_series_revision"],"documented_changes":["CAS states that the annual national-accounts estimates for 2022-2023 include a revision of previous years' estimates","the published methodology is based on SNA 2008"],"bridge_class":"official_bridge","bridge_status":"the current CAS release contains revised prior-year estimates","direct_comparability":"method_version_required_for_real_time_analysis","user_action":"Use the current revised series for current historical analysis; preserve the earlier vintage when reproducing forecasts, policy analysis or publications created before the 2022-2023 revision.","source_urls":["https://cas.gov.lb/index.php/economic-statistics-en/cpi-en/83-english/publications-en"],"review_status":"source-verified; magnitude map pending"},
    {"id":"KWT-NONFIN-SERVICES-2002-SURVEY-REDESIGN","country":"Kuwait","series":"Annual establishment survey — non-financial services","domain":"business_statistics","effective_period":"2002 survey redesign onward","producer":"Central Statistical Bureau (CSB)","change_type":["questionnaire_revision","classification_change","sampling_frame_update"],"documented_changes":["CSB states that the survey was substantially developed from 2002","field questionnaire revisions incorporated ISIC Rev.3 codes and SNA 1993 transaction codes","a new establishment frame based on the 2000 establishment count was used and subsequently updated","publication tables were reorganized and comparative/time-series tables were added from the 2003 bulletin"],"bridge_class":"no_verified_bridge","bridge_status":"the producer documents the redesign but the Lab has not verified a formal concordance/bridge for pre- and post-2002 detailed activity series","direct_comparability":"classification_bridge_required_for_detailed_activity_series","user_action":"Mark 2002 as a survey/classification regime boundary when constructing long establishment-service series. Do not merge detailed pre-2002 and post-2002 activity categories without a documented classification bridge.","source_urls":["https://www.csb.gov.kw/Pages/Statistics?ID=31&ParentCatID=3"],"review_status":"source-verified"}
  ]
}