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The psychometric properties of the Injection Drug User Quality of Life Scale (IDUQOL) were assessed in 61 Montreal IDUs in 2001, 85% of whom were reinterviewed within four weeks. The reliability of the IDUQOL was acceptable (ICC = 0.71) and concordance between the IDUQOL and the Flanagan Quality of Life Scale was moderate (Pearson coefficient = 0.57). Quality of life was negatively associated with injection cocaine and emergency department use with both instruments; these results were more striking for the IDUQOL. The IDUQOL is a culturally relevant quality of life instrument with good psychometric properties. The IDUQOL may be useful in the development and evaluation of interventions for IDUs.
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Brogly et al. (2003) studied this question.