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The Quality of Life Enjoyment and Satisfaction Questionnaire (Q-LES-Q) and its short form (Q-LES-Q-SF) are among the most frequently used outcome measures in psychiatry research. The aim of this study was to analyse the measurement properties of the Q-LES-Q-SF for quality of life assessments in the clinical settings. Fifty-seven adults with a psychiatric diagnosis participated. Psychometric evaluation included descriptive analysis, internal consistency, test-retest reliability, validity, sensitivity and responsiveness analysis. The amount of missing data was 5.3%, while no floor or ceiling effects were observed. The internal consistency and test-retest coefficients were 0.9 and 0.93, respectfully. Almost all items significantly correlated to the total score and other measures used in the study, with the correlations ranging 0.41-0.81. Finally, the responsiveness parameters indicated the Q-LES-Q-SF is 80% sensitive and 100% specific measure. This preliminary analysis of the Q-LES-Q-SF demonstrated that it could produce reliable and valid clinical assessments of quality of life.
Dejan Stevanović (Thu,) studied this question.