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Measuring health: related quality of life in hemodialysis patients. Psychometric properties of the Missoula-VITAS Quality of Life Index (MVQOLI-15) in Greece

Paraskevi Theofilou, Adamantia Aroni, Maria Ralli, Maria Gouzou, Sophia Zyga
  • Paraskevi Theofilou
    Centre for Research and Technology, Department of Kinesiology, Health & Quality of Life Research Group, Trikala, Thessaly, Greece | theofi@otenet.gr
  • Adamantia Aroni
    General Hospital of Molaon, Sparta, Greece
  • Maria Ralli
    General Hospital of Kalamata, Kalamata, Greece
  • Maria Gouzou
    General Hospital of Kalamata, Kalamata, Greece
  • Sophia Zyga
    Nursing Department, University of Peloponnese, Sparta, Greece

Abstract

Different measuring tools have been used to understand the outcomes of end-stage renal disease (ESRD) therapies. However, survival, cost-effectiveness and quality of life (QOL) are the main parameters to evaluate treatment of ESRD. The current study meant to assess the psychometric properties (reliability and validity) of the Missoula-VITAS Quality of Life Index (MVQOLI-15) translation to Greek in patients undergoing hemodialysis (HD). A total sample of 79 HD patients voluntarily participated in this pilot study. Domain analysis of MVQOLI-15-Greek was conducted based on the collected data at initial assessment. The reliability properties of the instrument were tested using the following measures; internal consistency, repeatability, test-retest reliability and convergent validity. Domain analysis demonstrated that all domains of the questionnaire had good variability. MVQOLI-15-Greek internal consistency was satisfactory with an overall Cronbach’s a at 0.74. Pearson’s r and intraclass correlation coefficient revealed strong correlations (ranging from 0.91 to 0.98) between initial assessment and reassessment. MVQOLI-15-Greek convergent validity analysis indicated that the domains were strongly related to the same construct. The findings of the study indicate that the Greek version of MVQOLI-15 provided satisfactory psychometric properties supporting its use within pathological populations and in the context of national QOL measurement.

Keywords

health-related quality of life, hemodialysis, MVQOLI-15, psychometric properties

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Submitted: 2013-02-03 19:30:49
Published: 2013-04-30 09:48:10
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Copyright (c) 2013 Paraskevi Theofilou, Adamantia Aroni, Maria Ralli, Maria Gouzou, Sophia Zyga

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