Assessing quality of life in patients with cancer : A comparison of a visual-analogue and a categorical model.
A simple instrument for self-assessment of quality of life (QL) in patients with cancer was elaborated using a linear analogue scale (LAS).
The instrument was based on five questions, exploring different functional areas ; the same questions were also addressed in a parallel format, where problems were seen from an opposite point of view (positive/negative).
The LAS was given to 222 patients, for a total of 372 tests collected.
Internal consistency was satisfactory (Cronbach's alpha=0.75) ; QL score was significantly correlated to parameters of disease.
Concordance between scales, as judged by comparison of parallel formats, was statistically significant but poor.
A questionnaire was then elaborated with similar items, based on a categorical scale.
A direct comparison between LAS and our questionnaire was made on a group of 41 patients.
Internal consistency was poor for the LAS (alpha=0.58) and good for the questionnaire (alpha=0.93) ; Spearman's rank correlation coefficients were disappointing for the LAS and good for the questionnaire ; the questionnaire was judged reliable in 82.9% ofcases, the LAS in 29.3% only ; the questionnaire score, and not the LAS score, was significantly correlated with PS and disease status. (...)
Mots-clés Pascal : Qualité vie, Evaluation, Tumeur maligne, Questionnaire, Echelle évaluation, Observation visuelle, Etude comparative, Homme, Epidémiologie, Graphe linéaire, Anticancéreux, Chimiothérapie, Traitement
Mots-clés Pascal anglais : Quality of life, Evaluation, Malignant tumor, Questionnaire, Evaluation scale, Visual observation, Comparative study, Human, Epidemiology, Linear graph, Antineoplastic agent, Chemotherapy, Treatment
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 96-0368293
Code Inist : 002B04B. Création : 10/04/1997.