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Construction et validation des échelles de qualité de vie

Annales de Réadaptation et de Médecine Physique
Publication Date
DOI: 10.1016/s0168-6054(00)80001-x
  • échelle
  • Qualité De Vie
  • Questionnaire
  • Quality Of Life
  • Medicine


Abstract Aims of the study Quality of Life(QoL) evaluation seems to be one of the most important step in diagnostic and therapeutic strategies. This evaluation is obviously the main approach before medical or surgical treatment of a pure functionnal disorder. Meanwhile, quality of life is a sujective perception of health, mental and social status. Wherefore, measurement of this concept is not easy and requires specific tools: QoL questionnaires. Method General or specific QoL questionnaires need a complex and specific validation to be used in clinical or research practices. Methods of a such validation are presented. Results Instrument must have strong psychometric properties exhibiting good validity and reliability. Content validity is the degree to which the measure reflects what was intented, including whether all relevant aspects are covered and whether the measure is readily understood and unambiguous to the target population. Construct validity refers to whether a symptom score can differentiate various population. The instrument should be responsive and detect change after therapeutic intervention. Criterion validity refers to how well the instrument correlates with a “gold standard” measure. Reliability refers to ability of the questionnaire to be consistent, stable and reproducible. Cronbach's alpha is a statistical procedure that accesses interrelationship between the different items. Conclusion Many disorders have a profound impact on the quality of life. QoL questionnaires for measuring this impact are necessary to assess treatment efficacy in clinical practice and must be used in clinical research studies, specially in multicentric trials. © 2000 Éditions scientifiques et médicales Elsevier SAS

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