Le pictogramme de la fatigue : évaluation psychométrique d’un nouvel outil clinique

Margaret I. Fitch, Terry Bunston, Debra Bakker, Deborah Mings, Pat Sevean

Abstract


La fatigue est un des effets secondaires du cancer les plus courants, et pourtant les cliniciens y accordent généralement peu d’attention dans le cadre des rendez-vous cliniques souvent fort chargés. Ce projet visait à évaluer les propriétés psychométriques d’un nouvel instrument à deux éléments conçu pour identifier rapidement les patients qui éprouvent des difficultés liées à la fatigue. Nous avons réalisé l’évaluation auprès de 190 patients atteints d’un cancer du poumon et traités dans des cliniques ambulatoires. Le pictogramme de la fatigue a affiché une bonne fiabilité de test-retest sur une période de 24 heures (coefficients kappa pondérés de 0,71 pour la première question et de 0,72 pour la seconde) et sur le plan de l’équivalence des méthodes (en personne et au téléphone) (coefficients kappa pondérés de 0,64 pour la première question et de 0,65 pour la seconde). Nous avons évalué la validité en comparant les résultats du nouvel outil avec l’inventaire multidimensionnel de la fatigue et le questionnaire SF-36. Dans l’ensemble, les patients qui affichaient des niveaux de fatigue élevés ont indiqué des niveaux élevés sur toutes les échelles respectives.

Le nouveau pictogramme de la fatigue était facile à administrer et à coter dans un milieu clinique fort occupé. Il fournit un instrument standardisé fiable et valide permettant d’identifier les patients qui éprouvent des difficultés liées à la fatigu.


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