Cohort validation pack
GLAD
Genetic Links to Anxiety and Depression
Generated 6 Oct 2026, 10:35 · ID 5
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
97
Total fields
81
Field-cited
0
Whole-record source only
0
AI-inferred, no source yet
11
Searched — not published
9
No value held
11
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 | 81 of 92 reviewable fields are cited to a source (88%) · 0 with no source yet · 11 searched — not published · 9 with no value held | Computed | No citation linked to this field yet. | No response selected | No notes |
Identity and ownership
| Field | Current value | Evidence | Source evidence | Response | Notes / correction |
|---|---|---|---|---|---|
Short name Required | GLAD | Field-cited |
| No response selected | No notes |
Full name Required | Genetic Links to Anxiety and Depression | Field-cited |
| No response selected | No notes |
Managing organisation Recommended | King's College London / NIHR BioResource | Field-cited |
| No response selected | No notes |
Primary site Recommended | NIHR Maudsley Biomedical Research Centre (site #1) | Field-cited |
| No response selected | No notes |
Website URL Recommended | https://gladstudy.org.uk/ | Field-cited |
| No response selected | No notes |
Catalogue of Mental Health Measures URL Recommended | https://www.cataloguementalhealth.ac.uk/GLAD | Field-cited |
| No response selected | No notes |
Contact name Recommended | No value held | Not published |
| No response selected | No notes |
Contact email Recommended | GLADstudy@kcl.ac.uk | Field-cited |
| No response selected | No notes |
Summary and status
| Field | Current value | Evidence | Source evidence | Response | Notes / correction |
|---|---|---|---|---|---|
Description Required | UK-wide online cohort for anxiety and depression led by the NIHR Mental Health BioResource at King's College London, with academic collaborators in Belfast, Edinburgh, and Cardiff. Participants join via gladstudy.org.uk, complete questionnaires, provide saliva for DNA, and consent to record linkage and recontact for further studies. | Field-cited |
| No response selected | No notes |
Total N Required | 79,831 | Field-cited |
| No response selected | No notes |
Total N qualifier Recommended | approximate | Field-cited |
| No response selected | No notes |
Year established Recommended | 2018 | Field-cited |
| No response selected | No notes |
Active cohort Recommended | Yes | Field-cited |
| No response selected | No notes |
Ongoing recruitment Recommended | Yes | Field-cited |
| No response selected | No notes |
Refreshed cohort Recommended | Yes | Field-cited |
| No response selected | No notes |
Recontact success rate Recommended | No value held | Not published |
| No response selected | No notes |
Retention rate Recommended | No value held | Not published |
| No response selected | No notes |
Published references Recommended | doi:10.1016/j.brat.2019.103503, doi:10.1186/s12888-023-04890-x | Field-cited |
| No response selected | No notes |
Notes Recommended | Homepage counter (Apr 2026): 79,831 people signed up. Healthy control arm (about 10,000) in progress per GLAD About page. NHS primary care sites also participate via NIHR Be Part of Research listings; hub sites in cohort_sites reflect named university/BRC leads. | Field-cited |
| 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 |
| No response selected | No notes |
Characterisation depth (axis) Required | 3 — Multi-domain MH characterisation | Field-cited |
| No response selected | No notes |
Data availability (axis) Required | 3 — Adds biological specimens/molecular data | Field-cited |
| No response selected | No notes |
Cohort map group (derived) Recommended | Group 2 | Internal | Internal catalogue field | — | — |
Population type Recommended | Case-enriched | Not published |
| No response selected | No notes |
Industry engagement status Recommended | Established access process | Not published |
| No response selected | No notes |
Parent cohort / programme Recommended | NBR-MH (Umbrella member) | Not published |
| No response selected | No notes |
TWiCs eligible Recommended | No | Field-cited |
| No response selected | No notes |
Data modalities
| Field | Current value | Evidence | Source evidence | Response | Notes / correction |
|---|---|---|---|---|---|
Questionnaire / interview Recommended | Yes | Field-cited |
| No response selected | No notes |
Cognitive testing Recommended | No | Field-cited |
| No response selected | No notes |
Physical measures Recommended | No | Field-cited |
| No response selected | No notes |
Biosamples Recommended | Yes | Field-cited |
| No response selected | No notes |
Genomic data Recommended | Yes | Field-cited |
| No response selected | No notes |
Omics Recommended | No | Field-cited |
| No response selected | No notes |
Imaging Recommended | No | Field-cited |
| No response selected | No notes |
Wearable / sensor Recommended | No | Field-cited |
| No response selected | No notes |
Digital phenotyping Recommended | No | Field-cited |
| No response selected | No notes |
Linked health records Recommended | Yes | Field-cited |
| No response selected | No notes |
Biosample types Recommended | saliva | Field-cited |
| No response selected | No notes |
Genotyping platform Recommended | Illumina genotyping arrays (e.g. Global Screening Array; array version may vary by analysis wave) | Field-cited |
| No response selected | No notes |
Imaging modalities Recommended | No value held | Not published |
| No response selected | No notes |
Mental health measures Recommended | PHQ-9, GAD-7, AUDIT, WEMWBS, PCL-6, MDQ, WSAS | Field-cited |
| 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 modality: DNA sample Recommended Confirm this row is correctly typed as a category marker, named instrument/interview, biospecimen type, assay/data product, imaging modality, sensor stream, or linked-record type; add missing named instruments/sample types where known. | available · biosamples · biospecimen type · parent: Biospecimen collection · DNA derived from saliva sample | Field-cited |
| No response selected | No notes |
Data modality: Saliva sample Recommended Confirm this row is correctly typed as a category marker, named instrument/interview, biospecimen type, assay/data product, imaging modality, sensor stream, or linked-record type; add missing named instruments/sample types where known. | available · biosamples · biospecimen type · parent: Biospecimen collection · Postal saliva kit | Field-cited |
| No response selected | No notes |
Data modality: Biospecimen collection Recommended Confirm this row is correctly typed as a category marker, named instrument/interview, biospecimen type, assay/data product, imaging modality, sensor stream, or linked-record type; add missing named instruments/sample types where known. | available · biosamples · category marker · Saliva sample for DNA analysis | Field-cited |
| No response selected | No notes |
Data modality: Genotyping array Recommended Confirm this row is correctly typed as a category marker, named instrument/interview, biospecimen type, assay/data product, imaging modality, sensor stream, or linked-record type; add missing named instruments/sample types where known. | available on application · genomics · derived genomic data · Genetic data available through NIHR BioResource collaboration routes | Field-cited |
| No response selected | No notes |
Data modality: Linked NHS records Recommended Confirm this row is correctly typed as a category marker, named instrument/interview, biospecimen type, assay/data product, imaging modality, sensor stream, or linked-record type; add missing named instruments/sample types where known. | available on application · linked health records · category marker · Consent includes access to full medical and health-related records | Field-cited |
| No response selected | No notes |
Data modality: Linked GP records Recommended Confirm this row is correctly typed as a category marker, named instrument/interview, biospecimen type, assay/data product, imaging modality, sensor stream, or linked-record type; add missing named instruments/sample types where known. | available on application · linked health records · linked record type · parent: Linked NHS records · Consent wording covers medical and health-related records; exact data cuts require custodian confirmation | Field-cited |
| No response selected | No notes |
Data modality: Questionnaire / interview data Recommended Confirm this row is correctly typed as a category marker, named instrument/interview, biospecimen type, assay/data product, imaging modality, sensor stream, or linked-record type; add missing named instruments/sample types where known. | available · questionnaires · category marker · Online sign-up and follow-up questionnaires | Field-cited |
| No response selected | No notes |
Data modality: AUDIT Recommended Confirm this row is correctly typed as a category marker, named instrument/interview, biospecimen type, assay/data product, imaging modality, sensor stream, or linked-record type; add missing named instruments/sample types where known. | available · questionnaires · questionnaire instrument · parent: Questionnaire / interview data · AUDIT captured as part of mental health/lifestyle questionnaire content | Field-cited |
| No response selected | No notes |
Data modality: GAD-7 Recommended Confirm this row is correctly typed as a category marker, named instrument/interview, biospecimen type, assay/data product, imaging modality, sensor stream, or linked-record type; add missing named instruments/sample types where known. | available · questionnaires · questionnaire instrument · parent: Questionnaire / interview data · GAD-7 collected in sign-up questionnaire | Field-cited |
| No response selected | No notes |
Data modality: PHQ-9 Recommended Confirm this row is correctly typed as a category marker, named instrument/interview, biospecimen type, assay/data product, imaging modality, sensor stream, or linked-record type; add missing named instruments/sample types where known. | available · questionnaires · questionnaire instrument · parent: Questionnaire / interview data · PHQ-9 collected in sign-up questionnaire | Field-cited |
| No response selected | No notes |
Data modality: CIDI-SF Recommended Confirm this row is correctly typed as a category marker, named instrument/interview, biospecimen type, assay/data product, imaging modality, sensor stream, or linked-record type; add missing named instruments/sample types where known. | available · questionnaires · structured interview · parent: Questionnaire / interview data · Adapted CIDI-SF lifetime diagnostic modules | Field-cited |
| No response selected | No notes |
Consent and use permissions
Specific use permissions separate from the 3D consent-level axis.
| Field | Current value | Evidence | Source evidence | Response | Notes / correction |
|---|---|---|---|---|---|
Consent/use: Biosample research use Recommended Confirm status, population scope, whether the permission is a DUO-style restriction/permission or a local operational permission, and whether academic and industry/commercial use differ. | permitted · biosample use · local operational permission · Eligible participants with returned saliva kits · Consent includes long-term sample storage. | Field-cited |
| No response selected | No notes |
Consent/use: Industry / commercial research considered Recommended Confirm status, population scope, whether the permission is a DUO-style restriction/permission or a local operational permission, and whether academic and industry/commercial use differ. | unknown · commercial use · local operational permission · Consented participants · Industry use is not represented as a structured public permission in the current seed source set. | Field-cited |
| No response selected | No notes |
Consent/use: Health record linkage permitted Recommended Confirm status, population scope, whether the permission is a DUO-style restriction/permission or a local operational permission, and whether academic and industry/commercial use differ. | permitted · data linkage · local operational permission · Consented participants · Consent includes access to full medical and health-related records. | Field-cited |
| No response selected | No notes |
Consent/use: Data sharing permitted Recommended Confirm status, population scope, whether the permission is a DUO-style restriction/permission or a local operational permission, and whether academic and industry/commercial use differ. | permitted · data sharing · local operational permission · Consented participants · Protocol states anonymised data sharing within consent terms. | Field-cited |
| No response selected | No notes |
Consent/use: Collaboration required Recommended Confirm status, population scope, whether the permission is a DUO-style restriction/permission or a local operational permission, and whether academic and industry/commercial use differ. | restricted · governance · duo modifier · Consented participants · Research use normally proceeds through NIHR BioResource governance and collaboration routes. | Field-cited |
| No response selected | No notes |
Consent/use: Participant recontact permitted Recommended Confirm status, population scope, whether the permission is a DUO-style restriction/permission or a local operational permission, and whether academic and industry/commercial use differ. | permitted · recontact · local operational permission · Consented participants · Participants consent to recontact for future research based on phenotype/genotype. | Field-cited |
| No response selected | No notes |
Consent/use: Health / medical / biomedical research use Recommended Confirm status, population scope, whether the permission is a DUO-style restriction/permission or a local operational permission, and whether academic and industry/commercial use differ. | permitted · research use · duo permission · DUO:0000002 · Consented participants · Subject to NIHR BioResource governance and collaboration approval. | Field-cited |
| No response selected | No notes |
Consent/use: Approach for trials permitted Recommended Confirm status, population scope, whether the permission is a DUO-style restriction/permission or a local operational permission, and whether academic and industry/commercial use differ. | restricted · trial approach · local operational permission · Consented participants · Participants can be recontacted for future research; trial-specific consent still required. | Field-cited |
| No response selected | No notes |
Access pathways
One or more routes by which researchers can request or analyse data.
| Field | Current value | Evidence | Source evidence | Response | Notes / correction |
|---|---|---|---|---|---|
Access pathway: Collaboration required Recommended Confirm route, access level, environment type, DAC review, collaboration, data sharing agreement, output checking, platform, timeline, cost, URL, and whether multiple routes are possible. | available on application · access level: custodian review · environment: other · collaboration required · data sharing agreement required · NIHR BioResource · https://gladstudy.org.uk/for-researchers/ · Researchers submit data/sample access requests and normally collaborate through NIHR BioResource governance. | Field-cited |
| No response selected | No notes |
Access pathway: Managed access / DAC Recommended Confirm route, access level, environment type, DAC review, collaboration, data sharing agreement, output checking, platform, timeline, cost, URL, and whether multiple routes are possible. | available on application · access level: custodian review · environment: other · DAC review required · collaboration required · data sharing agreement required · NIHR BioResource · https://gladstudy.org.uk/for-researchers/ · Access approval and feasibility are governed by the BioResource access process. | Field-cited |
| No response selected | No notes |
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 |
|---|---|---|---|---|---|
Coverage: Questionnaire responses submitted Recommended Confirm numerator, denominator, unit type, exactness qualifiers, denominator type, basis, as-of date/release, source wording, and whether the metric is marginal, joint, conditional, or a release total. | >= 50,000 / >= 91,000 (54.95% indicative) · unit: participants · denominator: consented participants · basis: completed · status: available · release: NIHR BioResource public count · as of 16 Apr 2026 · scope: marginal · source value: 50,000+ questionnaire responses of 91,000+ GLAD participants · Both numerator and denominator are lower-bound public counts; computed percentage should be read as indicative only. | Field-cited |
| No response selected | No notes |
Coverage: Saliva sample kits returned Recommended Confirm numerator, denominator, unit type, exactness qualifiers, denominator type, basis, as-of date/release, source wording, and whether the metric is marginal, joint, conditional, or a release total. | >= 35,000 / >= 91,000 (38.46% indicative) · unit: samples · denominator: consented participants · basis: collected · status: available · release: NIHR BioResource public count · as of 16 Apr 2026 · scope: marginal · source value: 35,000+ returned saliva kits of 91,000+ GLAD participants · Both numerator and denominator are lower-bound public counts; computed percentage should be read as indicative only. | Field-cited |
| No response selected | No notes |
Linkage and access
| Field | Current value | Evidence | Source evidence | Response | Notes / correction |
|---|---|---|---|---|---|
NHS linkage Recommended | Yes | Field-cited |
| No response selected | No notes |
GP linkage Recommended | Yes | Field-cited |
| No response selected | No notes |
Death registry linkage Recommended | No | Field-cited |
| No response selected | No notes |
Education linkage Recommended | No | Field-cited |
| No response selected | No notes |
Data access mechanism Recommended | collaboration | Field-cited |
| No response selected | No notes |
TRE platform Recommended | No value held | Not published |
| No response selected | No notes |
Data dictionary URL Recommended | https://gladstudy.org.uk/for-researchers/ | Field-cited |
| No response selected | No notes |
Data access timeline (days) Recommended | No value held | Not published |
| No response selected | No notes |
Data access cost Recommended | No value held | Not published |
| No response selected | No notes |
Participant profile and dates
| Field | Current value | Evidence | Source evidence | Response | Notes / correction |
|---|---|---|---|---|---|
Age distribution Recommended | 50+: 0.33; 18-25: 0.15; 26-35: 0.22; 36-50: 0.3 | Field-cited |
| No response selected | No notes |
Sex distribution Recommended | male: 0.24; other: 0.01; female: 0.75 | Field-cited |
| No response selected | No notes |
Ethnicity distribution Recommended | asian: 0.03; black: 0.01; mixed: 0.02; other: 0.01; white: 0.93 | Field-cited |
| No response selected | No notes |
Smoking status distribution Recommended | never: 0.506; former: 0.319; current: 0.175 | Field-cited |
| No response selected | No notes |
Median age Recommended | 42.6 | Field-cited |
| No response selected | No notes |
Percent female Recommended | 75.00 | Field-cited |
| No response selected | No notes |
Percent non-white Recommended | 7.00 | Field-cited |
| No response selected | No notes |
Geographic coverage Recommended | national | Field-cited |
| No response selected | No notes |
Follow-up duration Recommended | 2018–present; annual optional questionnaires | Field-cited |
| No response selected | No notes |
Last data collection date Recommended | No value held | Not published |
| No response selected | No notes |
Recruitment start date Recommended | 17 Sept 2018 | Field-cited |
| No response selected | No notes |
Recruitment end date Recommended | 1 Sept 2028 | Field-cited |
| 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 |
| No response selected | No notes |
Diagnosis area: Generalised anxiety disorder Recommended Confirm this diagnosis area applies and estimated N if shown. | Generalised anxiety disorder · Anxiety Disorders | Field-cited |
| No response selected | No notes |
Diagnosis area: Social anxiety disorder Recommended Confirm this diagnosis area applies and estimated N if shown. | Social anxiety disorder · Anxiety Disorders | Field-cited |
| No response selected | No notes |
Diagnosis area: Panic disorder Recommended Confirm this diagnosis area applies and estimated N if shown. | Panic disorder · Anxiety Disorders | Field-cited |
| No response selected | No notes |
Linked sites
Sites contributing participants or data to this cohort.
| Field | Current value | Evidence | Source evidence | Response | Notes / correction |
|---|---|---|---|---|---|
Linked site: NIHR Maudsley Biomedical Research Centre Recommended | NIHR Maudsley Biomedical Research Centre · London | Field-cited |
| No response selected | No notes |
Linked site: Queen's University Belfast Recommended | Queen's University Belfast · Northern Ireland | Field-cited |
| No response selected | No notes |
Linked site: University of Edinburgh Recommended | University of Edinburgh · Scotland | Field-cited |
| No response selected | No notes |
Linked site: Cardiff University Brain Research Imaging Centre Recommended | Cardiff University Brain Research Imaging Centre · Wales | Field-cited |
| 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 | unverified | Internal | Internal catalogue field | — | — |
Last verified Recommended | No value held | Internal | Internal catalogue field | — | — |
Data source Recommended | Verified Apr 2026 from gladstudy.org.uk (home, about), Davies et al. 2019 Behav Res Ther (PMC6891252), Bright et al. 2023 BMC Psychiatry, NIHR Maudsley BRC GLAD story, NIHR Mental Health BioResource pages, NIHR Be Part of Research (trialId=21684); ClinicalTrials.gov v2 search returned no protocol titled GLAD; ISRCTN web UI timed out. | Internal | Internal catalogue field | — | — |