Validation of the CIDI 5.0 Against the SCID-5 for Lifetime Mental Disorders

May 19, 2026 updated by: Michael Y. Ni, The University of Hong Kong

Validity of the World Health Organization CIDI 5.0 for Assessing Lifetime Prevalence of Mental Disorders: A Clinical Reappraisal Study Using the SCID-5

The World Health Organization Composite International Diagnostic Interview (CIDI) is a fully structured diagnostic tool designed for lay interviewers to assess the prevalence of mental and substance use disorders. Earlier versions, such as the CIDI 3.0, demonstrated acceptable individual-level concordance with clinical assessments based on DSM-IV criteria (Haro et al. 2006). The latest iteration (CIDI 5.0) has been updated to operationalize DSM-5 criteria.

Recent evidence from a large-scale, community-based national study in Qatar suggests that under DSM-5 criteria (Khaled et al. 2024), after recalibration, the CIDI 5.0 maintains high specificity (91.9% for MDD, 94.7% for GAD, and 85.5% for PTSD). Sensitivity suggested CIDI diagnoses aligned closely with clinical "gold standard" diagnoses (51.5% for MDD, 50.7% for GAD, and 77.3% for PTSD). Despite the evidence from Qatar, there remains a lack of evidence regarding the validity of the CIDI 5.0 in population-based studies.

Therefore, this study aims to evaluate the diagnostic validity of the CIDI 5.0 for Lifetime MDD, GAD, and PTSD, using the Structured Clinical Interview for DSM-5 (SCID-5) as the definitive clinical gold standard.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Estimated)

300

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

  • Name: Yoona Kim, PhD
  • Phone Number: +852 3917 9109
  • Email: yoonak@hku.hk

Study Locations

  • Hong Kong
      • Hong Kong, Hong Kong
        • Recruiting
        • The University of Hong Kong
        • Contact:
          • Yoona Kim, PhD
          • Phone Number: +852 3917 9109
          • Email: yoonak@hku.hk

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

This study is a sub-study of the District Health Profile (DHP), which is a district-level representative descriptive cross-sectional study. In DHP, 1% of households in selected Hong Kong districts will be randomly selected from the Census and Statistics Department's list of quarters, with stratification based on districts and housing types; all persons aged 18 and above in the recruited households will be included and surveyed. All individuals will complete the survey for the DHP study, including the CIDI-5 section. Based on prior studies (Haro et al., 2006; Khaled et al., 2024), to ensure adequate statistical power and control for Type I error, the clinical validation study will include 300 individuals. 77 participants will serve as controls with no history of mental disorders, and the remaining sample size will consist of participants with at least one lifetime diagnosis of MDD, GAD, or PTSD, as identified by CIDI-5, aiming to reach at least 112 samples for each diagnosis.

Description

Inclusion Criteria:

  • All household members aged 18 years old and over are randomly sampled from the Census and Statistics Department List of Quarters
  • Live in the address sampled from the Census and Statistics Department List of Quarters
  • Reside in Hong Kong for at least six months in the past year
  • Able to read and communicate in Chinese or English
  • Without linguistic or cognitive difficulties

Exclusion Criteria:

  • Domestic workers

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
CIDI-5 Validation Cohort
This group consists of participants from the general population who will complete the CIDI-5 interview. A stratified subsample will be selected for a follow-up clinical reappraisal using the SCID-5 to determine diagnostic accuracy.
Diagnostic test: CIDI-5
The World Health Organization Composite International Diagnostic Interview-5th (CIDI-5) is a standardized diagnostic tool used to assess the prevalence of mental and substance use disorders over varying time frames (30 days, 12 months, and lifetime) based on the diagnostic criteria outlined in the Diagnostic and Statistical Manual of Mental Disorders 5th edition (DSM-5) and International Classification of Diseases 10th edition (ICD-10). Trained interviewers will administer selected modules from the Hong Kong version of the CIDI-5 in a computer-assisted personal interview to measure the outcomes. To validate the diagnoses in the CIDI-5 group, investigators will conduct clinical re-interviews of 3 selected CIDI-5 diagnoses: major depressive disorder (MDD), generalized anxiety disorder (GAD), and post-traumatic stress disorder (PTSD) using the Structured Clinician Interview for DSM-5 (SCID) by a trained mental health professional with previous experience using SCID.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Worry and Anxiety
Time Frame: Immediately following intervention or recruitment
The main outcome in this module is the lifetime prevalence of Generalized Anxiety Disorder (GAD)
Immediately following intervention or recruitment
Depression
Time Frame: Immediately following intervention or recruitment
The main outcome in this module is the lifetime prevalence of Major Depressive Disorder (MDD)
Immediately following intervention or recruitment
Stressful Experiences
Time Frame: Immediately following intervention or recruitment
The main outcome in this module is the lifetime prevalence of PTSD.
Immediately following intervention or recruitment

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

The University of Hong Kong

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

May 14, 2025

Primary Completion (Estimated)

January 1, 2028

Study Completion (Estimated)

January 1, 2028

Study Registration Dates

First Submitted

April 9, 2026

First Submitted That Met QC Criteria

May 19, 2026

First Posted (Actual)

May 22, 2026

Study Record Updates

Last Update Posted (Actual)

May 22, 2026

Last Update Submitted That Met QC Criteria

May 19, 2026

Last Verified

April 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • UW 24-771-2

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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