Focus Area: Substance dependence

Overview: The Leeds Dependence Questionnaire (LDQ) is a diagnostic measure of the severity of substance dependence, an important measure in determining treatment goals, and a treatment outcome measure that works with abstinent patients

Total number of items: Ten 

Standardized cadence: Weekly

Estimated completion time: One to three minutes

Supported subscales: None   

Age range: 16+ 

Scoring and interpretation: 

Reliability/Validity: Factor analysis revealed a single factor accounting for 63% of the variance in reported dependence severity. Cronbach’s alpha has been identified as 0.93. 

Additional information: N/A
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