Cohort validation pack

DELPHIC

Delirium and Population Health Informatics Cohort

Generated 6 Oct 2026, 10:36 · ID 84

AI inferred

Last verified: 17/04/2026

Instructions for reviewers

Review each field against your knowledge of this cohort. Mark Accurate if the value is right, Needs correction if it is wrong or inaccurate (add notes), Not sure if you cannot verify it, or Does not apply if the field is not relevant.
Evidence shown is from our source registry. Fields marked No source yet hold values we could not yet pin to a document — those were AI-inferred and need your input most. Fields marked Searched — not published are ones we looked for and could not find publicly; the note lists where we checked.
Your selections and notes are kept in this browser tab only (not sent to the database). Print or save as PDF when finished, then return it to the DIGIT team.

Overview

Total fields

Field-cited

Whole-record source only

AI-inferred, no source yet

Searched — not published

No value held

Needs review

Source coverage

Summary of how well fields in this pack are linked to evidence.

Field	Current value	Evidence	Source evidence	Response	Notes / correction
Field-level source coverage Optional	33 of 68 reviewable fields are cited to a source (49%) · 7 with no source yet · 28 searched — not published · 23 with no value held	Computed	No citation linked to this field yet.	Response for Field-level source coverageAccurateNeeds correctionNot sureDoes not apply No response selected	No notes

Identity and ownership

Field	Current value	Evidence	Source evidence	Response	Notes / correction
Short name Required	DELPHIC	Field-cited	DPUK Data Portal — DELPHIC cohort directory entry https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC Section: Cohort directory table “DELPHIC” Page: https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC	Response for Short nameAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Full name Required	Delirium and Population Health Informatics Cohort	Field-cited	DPUK Data Portal — DELPHIC cohort directory entry https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC Section: Cohort directory table “Delirium and Population Health Informatics Cohort” Page: https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC	Response for Full nameAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Managing organisation Recommended	University College London (MRC Unit for Lifelong Health and Ageing)	Field-cited	DPUK Data Portal — DELPHIC cohort directory entry https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC Section: Institution and department rows “UCL” Page: https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC DIGIT managing_organisation combines DPUK institution UCL with the listed department MRC Unit for Lifelong Health and Ageing from adjacent table cells on the same page.	Response for Managing organisationAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Primary site Recommended	NIHR University College London Hospitals Biomedical Research Centre (site #5)	Field-cited	Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 Section: Hospital assessments “Participants admitted to UCH or RFH are seen every weekday.” Page: https://pmc.ncbi.nlm.nih.gov/articles/PMC5807842/ primary_site_id=5 maps to the NIHR UCL Hospitals BRC DIGIT site (University College Hospital / UCLH partnership), the Camden acute site named UCH in the protocol.	Response for Primary siteAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Website URL Recommended	https://www.linkage-camden.com/	Field-cited	DPUK Data Portal — DELPHIC cohort directory entry https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC Section: Study/Database Website “https://www.linkage-camden.com/” Page: https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC	Response for Website URLAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Catalogue of Mental Health Measures URL Recommended	No value held	No source yet	No citation linked to this field yet.	Response for Catalogue of Mental Health Measures URLAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Contact name Recommended	Daniel Davis	Field-cited	Health Research Authority — DELPHIC study application summary (IRAS 164446) https://www.hra.nhs.uk/planning-and-improving-research/application-summaries/research-summaries/delirium-and-population-health-informatics-cohort-delphic-study/ Section: Contact name “Daniel Davis” Page: https://www.hra.nhs.uk/planning-and-improving-research/application-summaries/research-summaries/delirium-and-population-health-informatics-cohort-delphic-study/	Response for Contact nameAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Contact email Recommended	daniel.davis@ucl.ac.uk	Field-cited	Health Research Authority — DELPHIC study application summary (IRAS 164446) https://www.hra.nhs.uk/planning-and-improving-research/application-summaries/research-summaries/delirium-and-population-health-informatics-cohort-delphic-study/ Section: Contact email “daniel.davis@ucl.ac.uk” Page: https://www.hra.nhs.uk/planning-and-improving-research/application-summaries/research-summaries/delirium-and-population-health-informatics-cohort-delphic-study/	Response for Contact emailAccurateNeeds correctionNot sureDoes not apply No response selected	No notes

Summary and status

Field	Current value	Evidence	Source evidence	Response	Notes / correction
Description Required	Population-based observational cohort of older adults (aged ≥70) resident in the London Borough of Camden, recruited from general practice, hospital and memory-clinic pathways, with baseline and two-year community cognitive assessments (TICS-m and related instruments), proactive surveillance for delirium in community and hospital (including University College Hospital and Royal Free Hospital), and consent for linkage of primary and secondary care electronic health records (Camden Integrated Digital Record). Known locally as LINKAGE Camden.	Field-cited	Health Research Authority — DELPHIC study application summary (IRAS 164446) https://www.hra.nhs.uk/planning-and-improving-research/application-summaries/research-summaries/delirium-and-population-health-informatics-cohort-delphic-study/ Section: Research summary “We will recruit a new population-based, age-stratified cohort of 2,000 individuals aged ≥70 years from the London Borough of Camden.” Page: https://www.hra.nhs.uk/planning-and-improving-research/application-summaries/research-summaries/delirium-and-population-health-informatics-cohort-delphic-study/ DIGIT description synthesises HRA summary with DPUK study overview and BMC protocol methods (linkage, hospitals, instruments) cited in adjacent provenance rows.	Response for DescriptionAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Total N Required	1,510	Field-cited	DPUK Data Portal — DELPHIC cohort directory entry https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC Section: Cohort directory table “1510” Page: https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC total_n uses #Subjects at Baseline from the DPUK directory (current enrolled count), distinct from the 2000 recruitment target in the 2018 protocol/HRA text.	Response for Total NAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Total N qualifier Recommended	No value held	Not published	NULL: DPUK baseline subject count is a stated enumeration, not a target/approximate figure requiring a data-dictionary qualifier.	Response for Total N qualifierAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Year established Recommended	2017	Field-cited	DPUK Data Portal — DELPHIC cohort directory entry https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC Section: Study start date “01/03/2017 00:00:00” Page: https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC year_established=2017 from DPUK study start date field.	Response for Year establishedAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Active cohort Recommended	Yes	Field-cited	DPUK Data Portal — DELPHIC cohort directory entry https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC Section: Is study ongoing? “Yes” Page: https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC	Response for Active cohortAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Ongoing recruitment Recommended	Yes	Field-cited	DPUK Data Portal — DELPHIC cohort directory entry https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC Section: Is study still recruiting? “Yes” Page: https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC	Response for Ongoing recruitmentAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Refreshed cohort Recommended	No	Not published	Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 FALSE: protocol describes fixed two-year follow-up waves and amendments; it does not describe periodic cohort-wide refresh waves analogous to data-dictionary is_refreshed examples.	Response for Refreshed cohortAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Recontact success rate Recommended	No value held	Not published	Searched — not published UNSOURCEABLE: headline recontact response percentage not stated in the cited DPUK/HRA/protocol excerpts.	Response for Recontact success rateAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Retention rate Recommended	No value held	Not published	Searched — not published UNSOURCEABLE: single retention percentage not quoted in cited sources for this pass.	Response for Retention rateAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Published references Recommended	10.1186/s12877-018-0742-2, 10.48532/049000	Field-cited	DPUK Data Portal — DELPHIC cohort directory entry https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC Section: DOI row “https://doi.org/10.48532/049000” Page: https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC Second published_references element records the DPUK dataset DOI cited in the DPUK directory. Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 Section: Article citation “10.1186/s12877-018-0742-2” Page: https://pmc.ncbi.nlm.nih.gov/articles/PMC5807842/ Array includes protocol DOI plus DPUK dataset DOI string from directory table (separate provenance row).	Response for Published referencesAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Notes Recommended	Primary outcome in the 2018 protocol is change in modified Telephone Interview for Cognitive Status (TICS-m) at two years relative to delirium episodes and features. HRA summary documents later amendments (including COVID-19–related field work); geographic scope has expanded beyond Camden in amended approvals — DIGIT row reflects the Camden-anchored core design.	Field-cited	Health Research Authority — DELPHIC study application summary (IRAS 164446) https://www.hra.nhs.uk/planning-and-improving-research/application-summaries/research-summaries/delirium-and-population-health-informatics-cohort-delphic-study/ Section: Research summary “[COVID-19 amendment –30/04/2020]” Page: https://www.hra.nhs.uk/planning-and-improving-research/application-summaries/research-summaries/delirium-and-population-health-informatics-cohort-delphic-study/ Supplements protocol-derived cohort notes with visible HRA amendment heading text about COVID-19–related changes. Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 Section: Abstract “The primary outcome is the change in the modified Telephone Interview for Cognitive Status at two years.” Page: https://pmc.ncbi.nlm.nih.gov/articles/PMC5807842/ Supplemented by a separate notes provenance row citing HRA amendment headings. DPUK Data Portal — DELPHIC cohort directory entry https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC Section: Study Overview “emphasis on delirium ascertainment” Page: https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 Section: Community assessments “depression” Page: https://pmc.ncbi.nlm.nih.gov/articles/PMC5807842/	Response for NotesAccurateNeeds correctionNot sureDoes not apply No response selected	No notes

3D cohort mapping

Consent, characterisation, and data availability axes used on the cohort map.

Field	Current value	Evidence	Source evidence	Response	Notes / correction
Consent level (axis) Required	3 — Broad consent (recontactable for future studies)	Field-cited	Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 Section: Consent “Consent is obtained in line with the principles of Good Clinical Practice.” Page: https://pmc.ncbi.nlm.nih.gov/articles/PMC5807842/ Step 1 identifiable=YES (named participants, record linkage). Step 2 whole-cohort access is not S251-only: participants consent. Step 3 recontact/follow-up is integral. Step 4 no cohort-wide interventional randomisation → consent_level=3 per data-dictionary.md.	Response for Consent level (axis)AccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Characterisation depth (axis) Required	3 — Multi-domain MH characterisation	Field-cited	Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 Section: Methods (HTML snapshot) “Daily inpatient assessments include the Memorial Delirium Assessment Scale, the Observational Scale for Level of Arousal, and the Hierarchical Assessment of Balance and Mobility.” Page: https://pmc.ncbi.nlm.nih.gov/articles/PMC5807842/ Together with community TICS-m / ACE-III elements and mood measures (Table 1), this supports multi-domain characterisation without a stated SCID/MINI/SCAN programme → characterisation_depth=3.	Response for Characterisation depth (axis)AccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Data availability (axis) Required	2 — Records + research data	Field-cited	Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 Section: Community assessments + hospital assessments + additional data sources “Administration of the Modified Telephone Interview for Cognitive Status (TICS-m),” Page: https://pmc.ncbi.nlm.nih.gov/articles/PMC5807842/ DERIVED: hasResearch=TRUE (questionnaires/cognitive/physical measures/linked records). hasBiological=FALSE. hasAdvanced=FALSE (no imaging, wearables, or passive digital phenotyping asserted) → data_availability=2 per data-dictionary.md pseudocode.	Response for Data availability (axis)AccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Cohort map group (derived) Recommended	Group 3	Internal	Internal catalogue field	—	—
Population type Recommended	General population	Not published	DIGIT Cohort Portfolio Review — population type and engagement classification (Aug 2026) Classified general_population in the DIGIT cohort portfolio review (Aug 2026). Older-adult population cohort in Camden recruited from general practice and community pathways irrespective of diagnosis.	Response for Population typeAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Industry engagement status Recommended	Unknown	Not published	Searched — not published UNSOURCEABLE: industry engagement status is an organisational property of the custodian and is not publicly documented; default 'unknown' pending a cohort-owner meeting.	Response for Industry engagement statusAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Parent cohort / programme Recommended	No value held	No source yet	No citation linked to this field yet.	Response for Parent cohort / programmeAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
TWiCs eligible Recommended	No	Not published	Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 FALSE: observational cohort without cohort-wide consent for interventional randomisation; consent_level=3.	Response for TWiCs eligibleAccurateNeeds correctionNot sureDoes not apply No response selected	No notes

Data modalities

Field	Current value	Evidence	Source evidence	Response	Notes / correction
Questionnaire / interview Recommended	Yes	Field-cited	Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 Section: Community assessments “Other measures of health and wellbeing, including: general health, co-morbidities, medications, health behaviours, hearing, vision, quality of life, continence, falls, depression, personal and instrumental activities of daily living” Page: https://pmc.ncbi.nlm.nih.gov/articles/PMC5807842/	Response for Questionnaire / interviewAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Cognitive testing Recommended	Yes	Field-cited	Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 Section: Abstract “prospectively following them for two years, including daily ascertainment of all inpatient episodes for delirium.” Page: https://pmc.ncbi.nlm.nih.gov/articles/PMC5807842/ TRUE per data-dictionary: structured cognitive instruments (TICS-m, ACE-III elements, in-hospital cognitive measures) are applied systematically.	Response for Cognitive testingAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Physical measures Recommended	Yes	Field-cited	Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 Section: Hospital assessments “Clinical: admission details, physiological measurements (National Early Warning Scores (NEWS)), illness severity scores (Acute Physiology and Chronic Health Evaluation (APACHE) II (minus arterial blood gas)), medications.” Page: https://pmc.ncbi.nlm.nih.gov/articles/PMC5807842/	Response for Physical measuresAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Biosamples Recommended	No	Not published	Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 FALSE: reviewed BMC protocol community and hospital assessment sections do not describe banking research blood/tissue for researcher access as a cohort-wide resource.	Response for BiosamplesAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Genomic data Recommended	No	Not published	Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 FALSE: protocol excerpts reviewed do not describe genotyping or sequencing as a collected modality.	Response for Genomic dataAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Omics Recommended	No	Not published	Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 FALSE: no proteomics/transcriptomics/metabolomics programme described in reviewed protocol sections.	Response for OmicsAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Imaging Recommended	No	Not published	Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 FALSE: reviewed protocol does not describe research MRI/PET or other imaging stored in the cohort archive.	Response for ImagingAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Wearable / sensor Recommended	No	Not published	Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 FALSE: no wearable sensor streams described in reviewed protocol sections.	Response for Wearable / sensorAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Digital phenotyping Recommended	No	Not published	Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 FALSE per data-dictionary boundary: DelApp/attention tools referenced are structured assessments, not passive smartphone/sensor phenotyping.	Response for Digital phenotypingAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Linked health records Recommended	Yes	Field-cited	Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 Section: Community assessments “record linkage of electronic health data in primary and secondary care” Page: https://pmc.ncbi.nlm.nih.gov/articles/PMC5807842/	Response for Linked health recordsAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Biosample types Recommended	No value held	Not published	NULL: consistent with has_biosamples=FALSE; no biosample types to list.	Response for Biosample typesAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Genotyping platform Recommended	No value held	Not published	NULL: has_genomic_data=FALSE.	Response for Genotyping platformAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Imaging modalities Recommended	No value held	Not published	NULL: has_imaging_data=FALSE.	Response for Imaging modalitiesAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Mental health measures Recommended	Modified Telephone Interview for Cognitive Status (TICS-m), Memorial Delirium Assessment Scale (MDAS), Informant Assessment of Geriatric Delirium (I-AGeD), Geriatric Depression Scale (GDS), Center for Epidemiological Studies – Depression (CES-D)	Field-cited	Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 Section: Table 1 footnotes “<em>GDS</em> Geriatric Depression Scale; <em>CES-D</em> Center for Epidemiological Studies – Depression;” Page: https://pmc.ncbi.nlm.nih.gov/articles/PMC5807842/ Array lists exemplar instruments named in protocol text and tables (TICS-m, MDAS, I-AGeD, GDS, CES-D). HTML entity tags appear in the saved PMC snapshot.	Response for Mental health measuresAccurateNeeds correctionNot sureDoes not apply No response selected	No notes

Data subcategories

Structured modality and subcategory rows used alongside the high-level data-type flags.

Field	Current value	Evidence	Source evidence	Response	Notes / correction
Data subcategories Recommended List key data subcategories using distinct rows for category markers, named questionnaire/interview instruments, biospecimen types, omics/genomics data products, imaging modalities, sensor streams, and linked-record types.	No value held	No source yet	No citation linked to this field yet.	Response for Data subcategoriesAccurateNeeds correctionNot sureDoes not apply No response selected	No notes

Field

Current value

Evidence

Source evidence

Response

Notes / correction

Data subcategories

Recommended

List key data subcategories using distinct rows for category markers, named questionnaire/interview instruments, biospecimen types, omics/genomics data products, imaging modalities, sensor streams, and linked-record types.

No value held

No source yet

No citation linked to this field yet.

AccurateNeeds correctionNot sureDoes not apply

Consent and use permissions

Specific use permissions separate from the 3D consent-level axis.

Field	Current value	Evidence	Source evidence	Response	Notes / correction
Consent and use permissions Recommended Confirm health/biomedical research use, industry/commercial consideration, non-commercial restrictions, governance modifiers, recontact, trial approach, biosample use, linkage, sharing, international transfer, and any Section 251/CAG support.	No value held	No source yet	No citation linked to this field yet.	Response for Consent and use permissionsAccurateNeeds correctionNot sureDoes not apply No response selected	No notes

Field

Current value

Evidence

Source evidence

Response

Notes / correction

Consent and use permissions

Recommended

Confirm health/biomedical research use, industry/commercial consideration, non-commercial restrictions, governance modifiers, recontact, trial approach, biosample use, linkage, sharing, international transfer, and any Section 251/CAG support.

No value held

No source yet

No citation linked to this field yet.

AccurateNeeds correctionNot sureDoes not apply

Access pathways

One or more routes by which researchers can request or analyse data.

Field	Current value	Evidence	Source evidence	Response	Notes / correction
Access pathways Recommended Confirm all data access pathways, including route, access level, TRE/SDE or download/API environment, DAC review, collaboration requirements, data sharing agreements, output checking, timelines, and fees.	No value held	No source yet	No citation linked to this field yet.	Response for Access pathwaysAccurateNeeds correctionNot sureDoes not apply No response selected	No notes

Field

Current value

Evidence

Source evidence

Response

Notes / correction

Access pathways

Recommended

Confirm all data access pathways, including route, access level, TRE/SDE or download/API environment, DAC review, collaboration requirements, data sharing agreements, output checking, timelines, and fees.

No value held

No source yet

No citation linked to this field yet.

AccurateNeeds correctionNot sureDoes not apply

Within-cohort coverage

Aggregate counts or percentages showing how broadly data, consent, or access characteristics apply within the cohort.

Field	Current value	Evidence	Source evidence	Response	Notes / correction
Within-cohort coverage metrics Recommended Provide numerator, denominator, unit type, numerator/denominator exactness qualifiers, denominator type, basis, date/release, original source wording, and whether each metric is marginal, joint, conditional, or a release total.	No value held	No source yet	No citation linked to this field yet.	Response for Within-cohort coverage metricsAccurateNeeds correctionNot sureDoes not apply No response selected	No notes

Field

Current value

Evidence

Source evidence

Response

Notes / correction

Within-cohort coverage metrics

Recommended

Provide numerator, denominator, unit type, numerator/denominator exactness qualifiers, denominator type, basis, date/release, original source wording, and whether each metric is marginal, joint, conditional, or a release total.

No value held

No source yet

No citation linked to this field yet.

AccurateNeeds correctionNot sureDoes not apply

Linkage and access

Field	Current value	Evidence	Source evidence	Response	Notes / correction
NHS linkage Recommended	Yes	Field-cited	Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 Section: Additional data sources “Participants are asked to consent for access to their NHS medical and social care notes, including data from GP, community mental health, community rehabilitation and social services records throughout the duration of the study.” Page: https://pmc.ncbi.nlm.nih.gov/articles/PMC5807842/	Response for NHS linkageAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
GP linkage Recommended	Yes	Field-cited	Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 Section: Additional data sources “including data from GP, community mental health, community rehabilitation and social services records” Page: https://pmc.ncbi.nlm.nih.gov/articles/PMC5807842/	Response for GP linkageAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Death registry linkage Recommended	No	Not published	Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 FALSE: reviewed protocol Additional data sources list does not explicitly name ONS mortality / civil registration linkage as a consented data stream.	Response for Death registry linkageAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Education linkage Recommended	No	Not published	Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 FALSE: education administrative linkage is not described in reviewed protocol consent and data-source sections.	Response for Education linkageAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Data access mechanism Recommended	direct_application	Field-cited	DPUK Data Portal — DELPHIC cohort directory entry https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC Section: DOI row “https://doi.org/10.48532/049000” Page: https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC DPUK catalogue DOI implies governed application routes typical of DPUK resources; mapped to direct_application (application-led access) pending programme-specific TRE naming.	Response for Data access mechanismAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
TRE platform Recommended	No value held	Not published	Searched — not published UNSOURCEABLE: specific TRE/SDE product name for analysis is not stated in the three cited snapshots (DPUK entry names the platform at catalogue level only indirectly via DOI).	Response for TRE platformAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Data dictionary URL Recommended	https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC	Field-cited	DPUK Data Portal — DELPHIC cohort directory entry https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC Section: Cohort directory “https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC” Page: https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC Uses DPUK directory entry as the public metadata hub for variable-level documentation pointers.	Response for Data dictionary URLAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Data access timeline (days) Recommended	No value held	Not published	Searched — not published UNSOURCEABLE: turnaround days not stated in cited DPUK/HRA/protocol excerpts.	Response for Data access timeline (days)AccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Data access cost Recommended	No value held	Not published	Searched — not published UNSOURCEABLE: costs not stated in cited snapshots.	Response for Data access costAccurateNeeds correctionNot sureDoes not apply No response selected	No notes

Participant profile and dates

Field	Current value	Evidence	Source evidence	Response	Notes / correction
Age distribution Recommended	70_plus: 1	Field-cited	Health Research Authority — DELPHIC study application summary (IRAS 164446) https://www.hra.nhs.uk/planning-and-improving-research/application-summaries/research-summaries/delirium-and-population-health-informatics-cohort-delphic-study/ Section: Research summary “2,000 individuals aged ≥70 years” Page: https://www.hra.nhs.uk/planning-and-improving-research/application-summaries/research-summaries/delirium-and-population-health-informatics-cohort-delphic-study/ JSON placeholder marks all participants as 70+ by inclusion criterion; not a full age histogram.	Response for Age distributionAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Sex distribution Recommended	No value held	Not published	Searched — not published UNSOURCEABLE in cited snapshots: sex proportions not extracted from DPUK table or HRA summary body text in this pass.	Response for Sex distributionAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Ethnicity distribution Recommended	No value held	Not published	Searched — not published UNSOURCEABLE: ethnicity JSON breakdown not present in the DPUK directory rows or HRA summary text captured here (BMC protocol discusses area-level census context, not participant-level JSON).	Response for Ethnicity distributionAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Smoking status distribution Recommended	No value held	No source yet	No citation linked to this field yet.	Response for Smoking status distributionAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Median age Recommended	No value held	Not published	Searched — not published UNSOURCEABLE: inclusion is age ≥70 but median age is not enumerated in the DPUK directory rows captured here.	Response for Median ageAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Percent female Recommended	No value held	Not published	Searched — not published UNSOURCEABLE: sex split percentage not present in cited DPUK table or HRA summary text.	Response for Percent femaleAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Percent non-white Recommended	No value held	Not published	Searched — not published UNSOURCEABLE: participant ethnicity percentages not extracted from cited sources (protocol mentions census context for Camden, not cohort table).	Response for Percent non-whiteAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Geographic coverage Recommended	regional	Field-cited	Health Research Authority — DELPHIC study application summary (IRAS 164446) https://www.hra.nhs.uk/planning-and-improving-research/application-summaries/research-summaries/delirium-and-population-health-informatics-cohort-delphic-study/ Section: Research summary “from the London Borough of Camden” Page: https://www.hra.nhs.uk/planning-and-improving-research/application-summaries/research-summaries/delirium-and-population-health-informatics-cohort-delphic-study/ geographic_coverage=regional: geographically defined London borough population with linked inner-London providers (not UK-wide).	Response for Geographic coverageAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Follow-up duration Recommended	2 years core follow-up (protocol); programme extended with HRA-approved amendments	Field-cited	Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 Section: Design “prospectively following them for two years” Page: https://pmc.ncbi.nlm.nih.gov/articles/PMC5807842/ DIGIT followup_duration also notes later programme extensions per HRA summary in cohort UPDATE data_source string.	Response for Follow-up durationAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Last data collection date Recommended	No value held	Not published	Searched — not published UNSOURCEABLE as a single DATE: rolling recruitment and multi-wave contacts continue beyond the original protocol window per DPUK ongoing flag.	Response for Last data collection dateAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Recruitment start date Recommended	1 Mar 2017	Field-cited	DPUK Data Portal — DELPHIC cohort directory entry https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC Section: Study start date “01/03/2017 00:00:00” Page: https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC Mapped to 2017-03-01 ISO date (March 2017) consistent with protocol statement that data collection started in March 2017.	Response for Recruitment start dateAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Recruitment end date Recommended	No value held	Not published	NULL: DPUK marks study ongoing and HRA text references expansion/amendments without a fixed closure date for Camden recruitment.	Response for Recruitment end dateAccurateNeeds correctionNot sureDoes not apply No response selected	No notes

Diagnosis areas

Mental health diagnosis areas represented in this cohort.

Field	Current value	Evidence	Source evidence	Response	Notes / correction
Diagnosis area: Major depressive disorder Recommended Confirm this diagnosis area applies and estimated N if shown.	Major depressive disorder · Mood Disorders	Field-cited	Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 Section: Community assessments “depression” Page: https://pmc.ncbi.nlm.nih.gov/articles/PMC5807842/ Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 Section: Table 1 footnotes “<em>GDS</em> Geriatric Depression Scale;” Page: https://pmc.ncbi.nlm.nih.gov/articles/PMC5807842/ Maps depressive symptom scales to diagnosis_area_id=5 (Major depressive disorder) as the closest DIGIT diagnosis-area bucket for measured depression phenotypes. UNSOURCEABLE: protocol names scales but does not give a depression-case numerator comparable to the dementia baseline count. NULL: no prevalence rate cited for depression caseness in reviewed snapshots.	Response for Diagnosis area: Major depressive disorderAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Diagnosis area: Dementia / neurodegeneration Recommended Confirm this diagnosis area applies and estimated N if shown.	Dementia / neurodegeneration · Neurodegenerative · est. n=51	Field-cited	DPUK Data Portal — DELPHIC cohort directory entry https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC Section: Dementia cases ascertained row “51 (3%)” Page: https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC DPUK Data Portal — DELPHIC cohort directory entry https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC Section: Study Overview “emphasis on delirium ascertainment” Page: https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC DPUK Data Portal — DELPHIC cohort directory entry https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC Section: Dementia cases ascertained row “51 (3%)” Page: https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC prevalence_rate rounded from 51/1510 to four decimals for DECIMAL(7,4) storage. DPUK Data Portal — DELPHIC cohort directory entry https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC Section: Dementia cases ascertained as part of study “At Baseline 51 (3%) participants had formal diagnosis of dementia; n=13 participants had mild cognitive impairment (memory clinic ascertainment).” Page: https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC Maps dementia diagnoses to diagnosis_area_id=20 (Dementia / neurodegeneration).	Response for Diagnosis area: Dementia / neurodegenerationAccurateNeeds correctionNot sureDoes not apply No response selected	No notes

Field

Current value

Evidence

Source evidence

Response

Notes / correction

Diagnosis area: Major depressive disorder

Recommended

Confirm this diagnosis area applies and estimated N if shown.

Major depressive disorder · Mood Disorders

Field-cited

Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics)
https://doi.org/10.1186/s12877-018-0742-2
Section: Community assessments
“depression”
Page: https://pmc.ncbi.nlm.nih.gov/articles/PMC5807842/
Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics)
https://doi.org/10.1186/s12877-018-0742-2
Section: Table 1 footnotes
“<em>GDS</em> Geriatric Depression Scale;”
Page: https://pmc.ncbi.nlm.nih.gov/articles/PMC5807842/
Maps depressive symptom scales to diagnosis_area_id=5 (Major depressive disorder) as the closest DIGIT diagnosis-area bucket for measured depression phenotypes.
UNSOURCEABLE: protocol names scales but does not give a depression-case numerator comparable to the dementia baseline count.
NULL: no prevalence rate cited for depression caseness in reviewed snapshots.

AccurateNeeds correctionNot sureDoes not apply

Diagnosis area: Dementia / neurodegeneration

Recommended

Confirm this diagnosis area applies and estimated N if shown.

Dementia / neurodegeneration · Neurodegenerative · est. n=51

Field-cited

DPUK Data Portal — DELPHIC cohort directory entry
https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC
Section: Dementia cases ascertained row
“51 (3%)”
Page: https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC
DPUK Data Portal — DELPHIC cohort directory entry
https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC
Section: Study Overview
“emphasis on delirium ascertainment”
Page: https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC
DPUK Data Portal — DELPHIC cohort directory entry
https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC
Section: Dementia cases ascertained row
“51 (3%)”
Page: https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC
prevalence_rate rounded from 51/1510 to four decimals for DECIMAL(7,4) storage.
DPUK Data Portal — DELPHIC cohort directory entry
https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC
Section: Dementia cases ascertained as part of study
“At *Baseline* 51 (3%) participants had formal diagnosis of dementia; n=13 participants had mild cognitive impairment (memory clinic ascertainment).”
Page: https://data.dpuk.ukserp.ac.uk/cohortdirectory/Item?fingerPrintID=DELPHIC
Maps dementia diagnoses to diagnosis_area_id=20 (Dementia / neurodegeneration).

AccurateNeeds correctionNot sureDoes not apply

Linked sites

Sites contributing participants or data to this cohort.

Field	Current value	Evidence	Source evidence	Response	Notes / correction
Linked site: NIHR University College London Hospitals Biomedical Research Centre Recommended	NIHR University College London Hospitals Biomedical Research Centre · London	Field-cited	Davis et al. 2018 — The delirium and population health informatics cohort study protocol (BMC Geriatrics) https://doi.org/10.1186/s12877-018-0742-2 Section: Hospital assessments “Camden is served by two acute hospitals, University College Hospital (UCH) and the Royal Free Hospital (RFH).” Page: https://pmc.ncbi.nlm.nih.gov/articles/PMC5807842/ cohort_sites row (84,5) links DELPHIC acute ascertainment to the UCLH-associated DIGIT site record; Royal Free is not a separate DIGIT site row in this database. NULL: per-site enrolled denominator not stated separately from overall DPUK baseline count in cited sources.	Response for Linked site: NIHR University College London Hospitals Biomedical Research CentreAccurateNeeds correctionNot sureDoes not apply No response selected	No notes

Verification metadata

Internal catalogue status — for reference only.

Field	Current value	Evidence	Source evidence	Response	Notes / correction
Verification status Recommended	ai_inferred	Internal	Internal catalogue field	—	—
Last verified Recommended	17 Apr 2026	Internal	Internal catalogue field	—	—
Data source Recommended	Populated Apr 2026 from DPUK cohort directory (DELPHIC), HRA application summary (IRAS 164446), Davis et al. BMC Geriatrics 2018 (PMC5807842), and docs/data-dictionary.md (axes, flags, group_2).	Internal	Internal catalogue field	—	—