Cohort validation pack

REACH

Resilience, Ethnicity and AdolesCent Mental Health

Generated 6 Oct 2026, 10:36 · ID 67

AI inferred

Last verified: 10/06/2026

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	48 of 70 reviewable fields are cited to a source (69%) · 6 with no source yet · 16 searched — not published · 15 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	REACH	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Article title “Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH)” Page: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9557858/	Response for Short nameAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Full name Required	Resilience, Ethnicity and AdolesCent Mental Health	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Key features / naming “REACH (Resilience, Ethnicity, and AdolesCent Mental Health) is an accelerated cohort” Page: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9557858/	Response for Full nameAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Managing organisation Recommended	King's College London	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Citation metadata “Health Service and Population Research Department, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK” managing_organisation set to King's College London as the host university named in the cohort profile metadata.	Response for Managing organisationAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Primary site Recommended	Institute of Psychiatry, Psychology & Neuroscience (site #13)	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Citation metadata “Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK” primary_site_id=13 maps to the IoPPN site record in this database (Institute of Psychiatry, Psychology & Neuroscience, King's College London).	Response for Primary siteAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Website URL Recommended	https://www.thereachstudy.com/	Field-cited	REACH Study public website https://www.thereachstudy.com/ Section: HTML head “https://www.thereachstudy.com/”	Response for Website URLAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Catalogue of Mental Health Measures URL Recommended	https://www.cataloguementalhealth.ac.uk/REACH	Field-cited	Catalogue of Mental Health Measures https://www.cataloguementalhealth.ac.uk Section: Official sitemap study URL “https://www.cataloguementalhealth.ac.uk/REACH” Page: https://www.cataloguementalhealth.ac.uk/REACH	Response for Catalogue of Mental Health Measures URLAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Contact name Recommended	Prof Craig Morgan	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Key features “the lead investigator, Prof. Craig Morgan”	Response for Contact nameAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Contact email Recommended	craig.morgan@kcl.ac.uk	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Key features “craig.morgan@kcl.ac.uk”	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	Accelerated school-based cohort of adolescents from 12 mainstream secondary schools in Lambeth and Southwark, inner London. Baseline (T1) Feb 2016–Jan 2018 recruited three age-defined cohorts (school years 7–9). Core data are annual classroom questionnaire waves; a nested subsample completes interviews, cognitive tasks, and hair cortisol. Ongoing school record linkages and further funded follow-ups are described in the cohort profile.	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Key features + Study design “Three representative cohorts of young people were recruited from mainstream secondary schools in inner-city London” Description synthesises Key features (accelerated cohort, inner-city London schools, follow-up waves, nested subsample with interview/cognition/hair cortisol) and Study design (Lambeth and Southwark; years 7–9).	Response for DescriptionAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Total N Required	4,353	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Key features “n = 4353 of 4945 invited (88%); age 11-14 years”	Response for Total NAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Total N qualifier Recommended	baseline_participants	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 “4353 (88.0%) completed the baseline questionnaire” total_n_qualifier set to baseline_participants to reflect N for completed baseline questionnaires (Part 1).	Response for Total N qualifierAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Year established Recommended	2015	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Why was the cohort set up? “The first phase of REACH, early-to-mid adolescence (2015-20), was funded by the European Research Council.” year_established=2015 taken from the start of the described first programme phase.	Response for Year establishedAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Active cohort Recommended	Yes	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Key features “Funding has been secured for further follow-ups.” Cohort remains active with ongoing/funded follow-up programme.	Response for Active cohortAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Ongoing recruitment Recommended	No	Field-cited	REACH Study public website https://www.thereachstudy.com/ Section: Homepage transition-to-adulthood survey “we invited REACH participants to take part in the next stage of the study” Set FALSE because reviewed sources support follow-up/recontact of existing REACH participants, not open recruitment of new baseline participants. is_active/is_refreshed remain TRUE for ongoing follow-up waves.	Response for Ongoing recruitmentAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Refreshed cohort Recommended	Yes	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Key features “An online wave of data collection (T4) is ongoing. Funding has been secured for further follow-ups.” Multiple funded programme phases and ongoing waves support is_refreshed=TRUE for continued cohort renewal beyond the initial adolescent sweep.	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: Sources report T2 completion (85.8%) and at-least-one-follow-up completion (92%), but no separate recontact success rate distinct from retention/completion; left NULL.	Response for Recontact success rateAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Retention rate Recommended	92.00	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: How often have they been followed up? “4005 (92% of those who took part at T1) have completed at least one follow-up” retention_rate=92.00 uses the exact published percentage for completing at least one follow-up (T2 and/or T3). T2-only completion is separately reported as 85.8% but not stored in this generic field.	Response for Retention rateAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Published references Recommended	doi:10.1093/ije/dyac051, doi:10.1111/jcpp.13586, doi:10.1136/jech-2020-214315, doi:10.1186/s12889-021-10834-5, doi:10.1186/s13034-025-01015-y, doi:10.1080/13811118.2024.2424237, doi:10.1016/s2352-4642(25)00059-8, doi:10.1007/s10964-025-02264-y	Field-cited	Europe PMC phrase search for REACH cohort publications https://www.ebi.ac.uk/europepmc/webservices/rest/search?query=%22Resilience,%20Ethnicity%20and%20AdolesCent%20Mental%20Health%22%20OR%20%22Resilience,%20Ethnicity,%20and%20AdolesCent%20Mental%20Health%22%20OR%20%22REACH%20study%22%20%22Craig%20Morgan%22&format=json&pageSize=25 Section: Europe PMC REACH phrase search + cohort profile references “Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH)” Published references include the IJE cohort profile, three REACH papers cited by the profile, and newer peer-reviewed REACH journal articles surfaced in the Jun 2026 Europe PMC/Crossref sweep. A 2025 medRxiv REACH preprint was found but not added to this peer-reviewed reference list.	Response for Published referencesAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Notes Recommended	Ethics: Psychiatry, Nursing and Midwifery Research Ethics Subcommittee (PNM-RESC), King's College London (ref 15/162320). Lead contact for data access listed in cohort profile: craig.morgan@kcl.ac.uk.	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Study design (ethics) “All study procedures were approved by the Psychiatry, Nursing and Midwifery Research Ethics Subcommittee (PNM-RESC), King’s College London (ref: 15/162320).”	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	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Who is in the cohort? / Study design “informed consent (for those aged 16 and over) and assent (for those aged under 16) was obtained from all participants” Step1 identifiable participants: YES (school-based individuals). Step2 S251/CAG-only access without consent: NO. Step3 recontact/further waves: YES (funded follow-ups and ongoing waves described). Step4 interventional/TWiCs-specific consent: NO (observational accelerated cohort). -> consent_level=3 (broad/recontactable research participation).	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	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Key features (nested subsample) “neurocognition, and hypothlamic-pituitary-adrenal (HPA) axis activation (cortisol from hair samples) is available.” DIGIT data-dictionary characterisation tree: validated MH instruments apply to the full sample (Part 1 questionnaires). Multi-domain nested measures (cognition + HPA/cortisol) support depth beyond questionnaires, but the profile excerpts do not document SCID/MINI/SCAN for the full cohort with active renewal at Level 4 threshold—conservative score=3.	Response for Characterisation depth (axis)AccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Data availability (axis) Required	3 — Adds biological specimens/molecular data	Field-cited	DIGIT — in-repo docs excerpts (data-dictionary.md + data-population-plan.md) “hasResearch = has_questionnaire_data OR has_cognitive_data OR has_physical_measures OR has_linked_health_records” DERIVED: hasResearch TRUE (questionnaires + cognitive tasks + hair cortisol as physical measure). hasBiological TRUE from hair sample/cortisol evidence. hasAdvanced FALSE. Per DIGIT pseudocode: if hasBiological -> 3. Public sources do not specify whether residual stored hair specimens are accessible, so this is caveated in data_availability_notes.	Response for Data availability (axis)AccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Cohort map group (derived) Recommended	Group 2	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). School-based adolescent cohort recruited from mainstream secondary schools irrespective of health status.	Response for Population typeAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Industry engagement status Recommended	Not yet considered	Not published	DIGIT cohort-owner meetings — GLAD, REACH, TEDS (mid-2026) Cohort-owner meeting (2026): the study team had not considered clinical trials or industry access; no process exists.	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	FALSE: Observational school-based cohort without Trials Within Cohorts randomisation described in cited excerpts.	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	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Study design “provided written assent before completing a computerized battery of validated questionnaires, in class, on study tablet computers.” TRUE per data-dictionary: validated self-report instruments administered as part of the research protocol.	Response for Questionnaire / interviewAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Cognitive testing Recommended	Yes	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Study design (Part 2) “face-to-face interview, hair sample (for cortisol), and cognitive tasks” TRUE: standardized cognitive tasks are administered in the nested Part 2 subsample.	Response for Cognitive testingAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Physical measures Recommended	Yes	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Key features “hypothlamic-pituitary-adrenal (HPA) axis activation (cortisol from hair samples) is available.” TRUE: hair cortisol reflects a physiological/neuroendocrine measure collected in the nested subsample.	Response for Physical measuresAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Biosamples Recommended	Yes	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Study design (Part 2) “hair sample (for cortisol)” TRUE: hair specimens collected for laboratory assay.	Response for BiosamplesAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Genomic data Recommended	No	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: What has been measured? “In future waves, we will explore the feasibility of ... collection of samples for DNA.” FALSE: DNA collection/genotyping is described as future feasibility work in the cohort profile, not as an available REACH archive at publication/source snapshot.	Response for Genomic dataAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Omics Recommended	No	Not published	FALSE: No proteomics/transcriptomics/metabolomics archive described in the cited Key features/Part 2 text; hair cortisol treated as targeted biochemistry/physical measure rather than broad omics.	Response for OmicsAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Imaging Recommended	No	Not published	FALSE: No neuroimaging modality is described in the cited cohort profile sections.	Response for ImagingAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Wearable / sensor Recommended	No	Not published	FALSE: No wearable/sensor protocol described in the cited cohort profile sections.	Response for Wearable / sensorAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Digital phenotyping Recommended	No	Not published	FALSE: Tablets are used to administer questionnaires (digital administration of instruments), not passive digital phenotyping/sensor traces as defined for the advanced-modality flag; conservative FALSE.	Response for Digital phenotypingAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Linked health records Recommended	No	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: What has been measured? “In future waves, we will explore the feasibility of linkages to medical records” FALSE: education/school linkage is ongoing, but medical/NHS record linkage is only described as future feasibility work in reviewed public sources.	Response for Linked health recordsAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Biosample types Recommended	hair	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Study design (Part 2) “hair sample (for cortisol)” biosample_types=ARRAY['hair'].	Response for Biosample typesAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Genotyping platform Recommended	No value held	Not published	Searched — not published UNSOURCEABLE: NULL with 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	Searched — not published UNSOURCEABLE: NULL with has_imaging_data=FALSE.	Response for Imaging modalitiesAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Mental health measures Recommended	Strengths and Difficulties Questionnaire (SDQ), Generalized Anxiety Disorder Scale (GAD-7), Short Mood and Feelings Questionnaire (SMFQ), Self-harm items, Behaviour checklist, Adolescent Psychotic Symptom Screener, Development and Adolescent Well-being Assessment (DAWBA; nested Part 2)	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Table 3: Mental health “Strengths and Difficulties Questionnaire (SDQ) ... Generalized Anxiety Disorder Scale (GAD-7) ... Short Mood and Feelings Questionnaire (SMFQ)” Array now lists named mental-health instruments/items from Table 3 only; cognitive tasks and hair cortisol remain represented by separate modality flags.	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	No	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: What has been measured? “feasibility of linkages to medical records” FALSE: medical/NHS linkage is mentioned only as future feasibility work; no current NHS linkage found.	Response for NHS linkageAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
GP linkage Recommended	No	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: What has been measured? “feasibility of linkages to medical records” FALSE: no GP linkage found in reviewed sources; medical-record linkage is future feasibility only.	Response for GP linkageAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Death registry linkage Recommended	No	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: What has been measured? “feasibility of linkages to medical records” FALSE: no ONS/death-registry linkage found in reviewed sources.	Response for Death registry linkageAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Education linkage Recommended	Yes	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Key features “Linkages to data routinely collected by schools is ongoing.” TRUE: ongoing linkages to school-collected administrative/education data.	Response for Education linkageAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Data access mechanism Recommended	collaboration	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Key features “To request access to REACH data for research purposes, and to discuss potential collaborations” Collaboration-style academic access via study team / lead investigator contact pathway.	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: No named TRE platform for REACH in the cited excerpts; NULL.	Response for TRE platformAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Data dictionary URL Recommended	No value held	Not published	Searched — not published UNSOURCEABLE: No public standalone REACH data-dictionary URL found in the REACH website snapshot, cohort profile data-access section, ClinicalTrials.gov/ISRCTN exact searches, or accessible NCBI OA metadata. Supplementary File 3 is cited by the paper but the direct supplement download was behind a PMC browser proof-of-work gate during Jun 2026 audit; left NULL pending custodian metadata.	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: No turnaround days published in the cited excerpts; NULL.	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: No fee schedule in the cited excerpts; NULL.	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	baseline_age_years: 11-14	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Key features “age 11-14 years, 85% from minority ethnic groups” Stored as the source-reported baseline age range because the reviewed public profile does not provide age-band counts or percentages.	Response for Age distributionAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Sex distribution Recommended	boys: 0.491; girls: 0.509	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Table 1: Gender “Boys 2138 49.1 ... Girls 2215 50.9” Table 1 baseline REACH cohort totals: boys n=2138 (49.1%) and girls n=2215 (50.9%), baseline n=4353. Stored as flat proportions for display consistency.	Response for Sex distributionAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Ethnicity distribution Recommended	other_black: 0.029; black_african: 0.256; other_unknown: 0.07; white_british: 0.153; black_caribbean: 0.165; non_british_white: 0.144; mixed_ethnic_groups: 0.142; indian_pakistani_bangladeshi: 0.042	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Table 1: Ethnic group “Black African 1113 25.6 ... Non-British White 626 14.4 ... Other/unknown 303 7.0” Full baseline Table 1 ethnicity distribution stored as flat proportions by reported category. The cohort-profile key feature states 85% minority ethnic groups, equivalent to not White British (84.7% rounded), not the stricter non-white field.	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: Public sources reviewed report baseline age range/school years (11-14; Years 7-9) and cohort sizes, but no combined baseline median age; left NULL.	Response for Median ageAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Percent female Recommended	50.90	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Table 1: Gender “Girls 2215 50.9” percent_female=50.90 copied from baseline Table 1 girls percentage.	Response for Percent femaleAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Percent non-white Recommended	63.40	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Table 1: Ethnic group “Black African 1113 25.6 ... Black Caribbean 719 16.5 ... Other Black 127 2.9 ... Mixed ethnic groups 617 14.2 ... Indian/Pakistani/Bangladeshi 181 4.2” percent_non_white=63.40 is the sum of explicitly non-white reported categories in Table 1. The separate 85% source phrase is minority ethnic / non-White-British, not literal non-white; Other/unknown (7.0%) is not counted as known non-white.	Response for Percent non-whiteAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Geographic coverage Recommended	regional	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Why was the cohort set up? “Lambeth and Southwark, London” Inner-city London multi-school recruitment across two boroughs → geographic_coverage=regional (not national; not single institution).	Response for Geographic coverageAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Follow-up duration Recommended	Annual T1-T3; T4 COVID wave; Phase 3 transition-to-adulthood follow-up listed as 2024-2025 ongoing on study website.	Field-cited	REACH Study public website https://www.thereachstudy.com/ Section: Homepage phases + cohort profile follow-up “Phase 3 (2024-2025 - ongoing)” Cohort profile supports annual T1-T3 and T4 COVID wave; REACH website snapshot adds transition-to-adulthood Phase 3. SQL summarises both.	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: Cohort profile reports completed T1-T3 and ongoing T4; REACH website snapshot lists Phase 3 (2024-2025 - ongoing). No public closure date or final data-collection date found; left NULL.	Response for Last data collection dateAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Recruitment start date Recommended	1 Feb 2016	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Key features “Baseline assessments (T1) took place between February 2016 and January 2018.” recruitment_start_date set to first month of stated baseline window.	Response for Recruitment start dateAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Recruitment end date Recommended	31 Jan 2018	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Key features “February 2016 and January 2018” recruitment_end_date set to end month of stated baseline window for Part 1.	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	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Table 3: Mental health “Short Mood and Feelings Questionnaire (SMFQ)” Maps depressive-symptom measurement to Major depressive disorder diagnosis area for discovery; REACH is population-based and not case-ascertained.	Response for Diagnosis area: Major depressive disorderAccurateNeeds correctionNot sureDoes not apply 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	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Table 3: Mental health “Generalized Anxiety Disorder Scale (GAD-7)” Maps GAD-7 symptom measurement to Generalised anxiety disorder diagnosis area for discovery; REACH is population-based and not case-ascertained.	Response for Diagnosis area: Generalised anxiety disorderAccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Diagnosis area: Self-harm (non-suicidal) Recommended Confirm this diagnosis area applies and estimated N if shown.	Self-harm (non-suicidal) · Self-Harm and Suicidality	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Table 3: Mental health “Self-harm” Self-harm items are collected in Part 1 waves and Part 2 interviews; mapped to self-harm/suicidality controlled area.	Response for Diagnosis area: Self-harm (non-suicidal)AccurateNeeds correctionNot sureDoes not apply No response selected	No notes
Diagnosis area: Transdiagnostic (anxiety-depression) Recommended Confirm this diagnosis area applies and estimated N if shown.	Transdiagnostic (anxiety-depression) · Transdiagnostic	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Table 3: Mental health “Strengths and Difficulties Questionnaire (SDQ)” Transdiagnostic row represents the broad adolescent mental-health/distress profile captured with SDQ, DAWBA and multi-domain measures.	Response for Diagnosis area: Transdiagnostic (anxiety-depression)AccurateNeeds correctionNot sureDoes not apply 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: Institute of Psychiatry, Psychology & Neuroscience Recommended	Institute of Psychiatry, Psychology & Neuroscience · London	Field-cited	Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH) (Int J Epidemiol 2022; PMC9557858) https://doi.org/10.1093/ije/dyac051 Section: Citation metadata “Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK” Site 13 is IoPPN as academic host for the lead team.	Response for Linked site: Institute of Psychiatry, Psychology & NeuroscienceAccurateNeeds 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	10 Jun 2026	Internal	Internal catalogue field	—	—
Data source Recommended	Re-verified Jun 2026 from Knowles et al. (2022) cohort profile (PMC9557858 HTML snapshot), REACH public website snapshot, Crossref/Europe PMC metadata and literature searches, ClinicalTrials.gov and ISRCTN exact searches, and in-repo DIGIT data-dictionary rules.	Internal	Internal catalogue field	—	—