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  1. Health-related quality of life in the general Norwegian population assessed by the European organization for Research and Treatment of Cancer Core quality-of-life questionnaire : The QLQ=C30 (+3).

    Article - En anglais


    To obtain reference data on health-related quality of life (HRQOL) for the functional and symptom scales and single items of the European Organization for Research and Treatment of Cancer Core Quality-of-Life Questionnaire (EORTC QLQ-C30 [+3]) in a representative sample of the Norwegian general population.

    Patients and Methods 

    A randomly selected sample of 3,000 people from the Norwegian population, aged 18 to 93 years, who represent geographic diversity, took part in this postal survey.

    The EORTC QLQ-C30 (+3) and a questionnaire about demographic data and health were sent by mail.

    A new questionnaire package was sent as a reminder after 3 weeks.


    The survey yielded a high response rate with 1,965 of 2,892 eligible persons responding (68%). There was a low amount of missing data (1.8%). Internal consistency was highly satisfactory and yielded Cronbach's alpha coefficients greater than 0.70 for all but two functional scales and one symptom scale.

    The sensitivity of the questionnaire was shown by the excellent discrimination between age and sex groups.

    Clinical validity was shown by the distinct differences according to age and sociodemographic characteristics.

    Women reported lower functional status and global quality of life (mean scale scores from 71.7 to 91.0) than men (mean scale scores from 75.4 to 94.4), and also more symptoms and problems. (...)

    Mots-clés Pascal : Tumeur maligne, Norvège, Europe, Homme, Epidémiologie, Qualité vie, Echelle évaluation, Questionnaire, Méthodologie

    Mots-clés Pascal anglais : Malignant tumor, Norway, Europe, Human, Epidemiology, Quality of life, Evaluation scale, Questionnaire, Methodology

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 98-0173066

    Code Inist : 002B04B. Création : 11/09/1998.