Cited by 32Substance Abuse Treatment and OutcomesPsychometric Methodologies and TestingAnxiety, Depression, Psychometrics, Treatment, Cognitive Processes

Psychometric validation of the Leeds Dependence Questionnaire (LDQ) in a young adult clinical sample

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Kelly, John F., Magill, Molly, Slaymaker, Valerie, Kahler, Christopher·2010·Addictive Behaviors

Abstract

Objective Measures of substance dependence severity that are both clinically efficient and sensitive to change can facilitate assessment of clinical innovation necessary for improving current evidence-based practices. The Leeds Dependence Questionnaire (LDQ) is a 10-item, continuous, self-report measure of dependence that is not specific to any particular substance and has shown promise in preliminary psychometric research. The present study investigates its psychometric properties in a large clinical sample of young adults.Method Young adults (N=300) were enrolled in a naturalistic treatment process and outcome study of residential substance dependence treatment (mean age 20.4 [1.6], range 18-25; 27% female; 95% White). Dependence severity by demographic and diagnostic groupings, factor structure and internal consistency, and criterion- and construct-related validity were examined.Results Dependence severity in this cohort of youth overall was high (M=18.65 [8.65]). LDQ scores were highest among opiate and stimulant users, and there was a trend for higher scores among women compared to men (t=1.869, p=.063). Factor analysis using a robust alpha factoring extraction revealed a single factor accounting for 63% of the variance in reported dependence severity. The internal consistency was also very high (alpha=.93). Concurrent and convergent validity with dependence criteria, substance use frequency, and general symptom severity, respectively, were also acceptable.Conclusions The LDQ shows considerable promise as a brief, psychometrically sound, measure of substance dependence useful across a variety of substances, that has clinical and research utility. This study supports its use among young adults.

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  1. Derogatis LR BSI-18: Brief Symptom Inventory 18 2001 Minneapolis: NCS Pearson Administration, scoring, and procedures manual
  2. Edwards G Orford J A plain treatment for alcoholism Proceedings of the Royal Society of Medicine 1977 70 344 348 877099 PMC1543093
  3. First MB Spitzer RL Gibbon M Williams J Structured Clinical Interview for DSM-IV-TR Axis I Disorders, Research Version, Patient Edition (SCID-I/P) 2002 New York Biometrics Research, New York State Psychiatric Institute

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Authors
Kelly, J. F., Magill, M., Slaymaker, V., & Kahler, C.
Affiliations
  • Harvard University (US)
  • Brown University (US)
Corresponding author
Kelly, John F.
Venue
Addictive Behaviors
Publisher
Elsevier BV
Published
2010-04
Volume
35
Issue
4
Pages
331-336
ISSN
0306-4603 (ISSN-L)
OpenAlex
W2053030088
Cited by
32
References
39
Citations by year
2026: 1 · 2024: 3 · 2023: 1 · 2022: 3 · 2021: 3 · 2019: 1 · 2018: 3 · 2017: 2 · 2016: 3 · 2015: 3 · 2014: 5 · 2013: 3 · 2012: 1
FWCI
0.22
Type
journal article
Language
en
Open access
Locations
  • Addictive Behaviors (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute on Alcohol Abuse and Alcoholism (R21AA018185)
Topics
  • Health Sciences › Medicine › Epidemiology › Substance Abuse Treatment and Outcomes
  • Social Sciences › Decision Sciences › Management Science and Operations Research › Psychometric Methodologies and Testing
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
Keywords
young adults, psychometric validation, opiate use, stimulant use, gender differences, factor structure, internal consistency, convergent validity, criterion validity
MeSH terms
Adolescent, Adult, Female, Humans, Male, Psychometrics, Surveys and Questionnaires, United States, Reproducibility of Results, Behavior, Addictive, Substance-Related Disorders, Young Adult

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