Measuring clinically significant outcomes – LDQ, CORE-10 and SSQ as dimension measures of addiction

Abstract

Aims and method To determine values for reliable change and clinically significant change for the Leeds Dependence Questionnaire (LDQ) and Social Satisfaction Questionnaire (SSQ). The performance of these two measures with the Clinical Outcomes in Routine Evaluation (CORE-10) as three dimension measures of addiction was then explored.Results The reliable change statistic for both LDQ and SSQ was ⩾4; the cut-offs for clinically significant change were LDQ ⩽10 males, ⩽5 females, and SSQ ⩾16. There was no overlap of 95% CIs for means by gender between ‘well-functioning’ and pre- and post-treatment populations.Clinical implications These data enable the measurement of clinically significant change using the LDQ and SSQ and add to the evidence for the performance of the LDQ, CORE-10 and SSQ as dimension measures of addiction. The CORE-10 and SSQ can be used as treatment outcome measures for mental health problems other than addiction.

Factor analysis of treatment outcomes from aUKspecialist addiction service: Relationship between theLeedsDependenceQuestionnaire,SocialSatisfactionQuestionnaire and 10‐itemClinicalOutcomes inRoutineEvaluation

“…The Addiction Severity Index is very detailed and includes five point scales for psychological and social well‐being. The scales described here are brief enough for routine use, can be embedded with other measures and they produce clinically meaningful data [17].…”

“…The LDQ and the SSQ have extensive and independent validation [8,10–14] and the psychometric properties of the CORE‐10 have been comprehensively investigated [15]. The development of the scales as a package [16] and the measurement of outcomes in a large clinical sample [17] have been described elsewhere.…”

Measuring Health and Broader Well-Being Benefits in the Context of Opiate Dependence: The Psychometric Performance of the ICECAP-A and the EQ-5D-5L

“…Due to the small number of participants achieving clinically important changes in some measures [60], and the lack of clinically important thresholds of change for all measures, the analysis focused on the assessment of sensitivity to change. In the assessment of sensitivity to change, the different measures are commonly compared for patient groups expected to have experienced a change in health and wellbeing based on an external criterion (anchor) [61].…”

Course and outcome of patients with alcohol use disorders following an alcohol intervention during hospital attendance: mixed method study

“…Second, as a clinically significant and reliable change in levels of psychological dependence (derived from scores on the Leeds Dependence Questionnaire (LDQ), 21 as per Jacobson and Truax's 25 guidelines). The method uses normative data to derive a cut-off value that indicates whether a follow-up score has moved closer to that of a ‘well-functioning’ population; norms for the LDQ are reported by Raistrick et al 26 (see also ).…”