{
  "release": "2026-10-16",
  "version": "1.1",
  "common": {
    "responsibility": "Published by Civil Liberties Action. Compilation, source retrieval and drafting used AI assistance. Automated integrity checks and additional source checks are described below; no independent external or specialist review is claimed.",
    "dates": "Release date is the date of this publication. reviewed_at records a stated evidence check, not proof that every fact remains current. Publication date, event date, reference period, document version and source-check date are separate fields.",
    "corrections": "Send the record identifier, proposed correction and supporting primary source to policy@civillibertiesaction.org.uk. Corrections are assessed against the same evidence rules for all subjects. Responses, reversals and corrected outcomes receive the same factual prominence as initial decisions. Substantive changes require a dated new release and a change-log entry; the old files remain available.",
    "selection_history": "The first pilots were assembled through purposive discovery and source checking. Their complete original search-engine query/results history was not retained, so the first selection cannot be replayed exactly. This limitation is not repaired by writing a retrospective systematic-search claim. Published records and transformations can be reproduced from the supplied files; prospective expansion protocols below define the next collection work.",
    "funding": "CLA's existing funding and interests statement applies. Its founder has disclosed Labour Party membership. The same inclusion, identity and correction rules apply regardless of political affiliation."
  },
  "unit": "One English upper-tier/unitary authority on post-April-2023 geography, with each measure retaining its original source area and definition.",
  "selection": "153 authorities; the entire mapped authority frame is included. Source tables are OHID/UKHSA 2022/23 opiate/crack prevalence, Fingertips 2024/25 completion indicators and 2026/27 protected drug-and-alcohol allocations. Historical service use is explicitly 2020/21.",
  "coding": [
    "Prevalence covers ages 15–64 and opiate/crack use. Treatment completion uses adults aged 18+ and source-specific substance groups. Completion without re-presentation is a proportion of all in treatment, not just those discharged. It is not a failure rate for everyone else.",
    "Funding is a protected allocation covering alcohol and prevention as well as drug treatment; it is not actual spend. No funding-per-person-in-need ratio is calculated from incompatible scope or periods.",
    "Former Cumbria is not artificially split between Cumberland and Westmorland and Furness. Combined Cornwall/Isles of Scilly, Hackney/City of London and Leicestershire/Rutland source areas retain their notes; do not sum overlapping source areas twice.",
    "Null means missing or unavailable separately, not zero. Source confidence limits, notes and denominators are retained. No local waiting-time or compatible unmet-need estimate is included."
  ],
  "future_protocol": "Add an access measure only when referral/start definitions, age and substance coverage, area and year are documented. Keep referral-to-start waits, treatment penetration, retention and completion separate. Compare like measures and periods; avoid causal claims from cross-sectional allocations.",
  "limits": "England only. These profiles describe need, selected outcomes and allocations, not current service availability, waiting lists, treatment quality or a national access ranking.",
  "data_dictionary": [
    [
      "id / record_id",
      "Stable record identifier; retained across releases where the unit remains the same."
    ],
    [
      "release / version",
      "Publication date and release version, separate from the date of underlying evidence."
    ],
    [
      "record_url / citation",
      "Fixed-version record link and suggested citation."
    ],
    [
      "category / geography / period",
      "Display group, actual coverage and source reference period; not a harmonised statistical panel."
    ],
    [
      "reviewed_at",
      "Date of the recorded source check, subject to its stated scope."
    ],
    [
      "details / sources",
      "Labelled observations and original URLs, titles and locators."
    ],
    [
      "limitations",
      "Record-specific boundary on interpretation."
    ],
    [
      "raw",
      "Underlying typed source/coding fields; null remains missing, not zero."
    ],
    [
      "geography_code / prevalence.area_name",
      "Target authority code and source geography; not always one-to-one."
    ],
    [
      "prevalence.*_95",
      "Published 95% limits for the estimated count or rate; not uncertainty for other measures."
    ],
    [
      "outcomes.*",
      "Numerator, denominator, value, interval and source notes for each substance group."
    ],
    [
      "funding.value_gbp",
      "Protected allocation, 2026/27, including alcohol; not actual spending."
    ]
  ]
}