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The applicability of quality-of-life assessment in palliative care: comparing two quality-of-life measures

Research assistant, Medicines Research Unit, University of Wales, Cardiff

M S Salek

Pharmacoepidemiology, Medicines Research Unit, University of Wales College of Medicine

I G Finlay

University of Wales College of Medicine and Medical Director, Holme Tower Marie Curie Centre, Penarth

Two self-administered quality-of-life measures, the McGill Quality of Life Questionnaire (MQOL) and the Patient Evaluated Problem Scores (PEPS) were compared in patients receiving palliative care. The MQOL is a multidimensional questionnaire consisting of 16 items in five quality-of-life (QOL) domains: physical symptoms, physical well-being, psychological, existential and support domains. The PEPS is an individualized questionnaire asking patients to identify and rate major problems affecting their QOL. Both questionnaires were completed by 36 patients during outpatient clinic visits in three palliative care settings in Wales. Of those patients who stated their questionnaire preference 60% favoured MQOL due to its comprehensiveness, while others (28%) preferred PEPS due to its simplicity. The MQOL showed excellent internal consistency ([.alpha] = 0.90). The intrapatient analysis of answers from both questionnaires showed that MQOL was better than PEPS in reporting physical symptoms and support domain, while PEPS detected more psychosocial issues. The MQOL overall QOL score correlated highly with its existential domain (r_s = 0.57, P < 0.0005) and the PEPS overall quality of life (r_s = 0.77, P < 0.0005). Similarly, the PEPS overall QOL correlated well with MQOL total score (r_s = 0.76, P < 0.0005) and existential domain of the MQOL (r_s = 0.63, P < 0.0005). The findings support the importance of an existential domain in assessing the QOL of this population. Both MQOL and PEPS were found to be relevant and acceptable in advanced cancer patients receiving palliative care. However, with its favourable psychometric properties MQOL may be more suitable for QOL assessment in this population.

Key Words: quality of life • neoplasms • palliative care • outcome assessment (health care)

Palliative Medicine, Vol. 13, No. 4, 325-334 (1999)
DOI: 10.1191/026921699670560921


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