© 1997 Oxford University Press
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Evaluation of treatment for congestive heart failure in patients aged 60 years and older using generic measures of health status (SF-36 and COOP charts)
Health Services Research Unit, University of Oxford Radcliffe Infirmary Oxford OX2 6HE, UK
1Stroke Unit, The Royal Boumemouth and Christchurch Hospitals NHS Trust Boumemouth BH7 7DW, UK
2Nuffield College Oxford OXI INF, UK
Address correspondence to: C. Jenkinson. Fax (+44) 1865 228418
OBJECTIVES:: to assess the functioning and well-being of older patients presenting with congestive heart failure (CHF) using established generic health status measures—the short form 36 health survey (SF-36) and Dartmouth COOP charts.
METHODS:: patients aged 60 or older with CHF were asked if they would take part. They were requested to complete interviewer-administered questionnaires before angiotensin converting enzyme (ACE) inhibitor treatment and at follow-up 4 weeks later. The interviewer administered the SF-36, COOP charts, the oxygen cost diagram and also asked patients to assess their health state overall and, after treatment, to assess changes, if any, in overall health.
RESULTS:: multi-dimensional health status measures indicate that patient's functioning and well-being is substantially compromised by CHF especially in areas relating to physical functioning, and that treatment with ACE inhibitors has only limited effect in improving health-related quality of life. However, on simple single-item global assessments of health, patients report that their overall health-related quality of life is good and many report improvements in overall health status at follow-up.
CONCLUSIONS:: ACE inhibitor treatment, whilst lengthening life, has a relatively limited impact on its quality. While multidimensional health status measures indicate CHF to be associated with poor health as measured by the SF-36 and COOP charts. However, when patients are asked simple single-item questions relating to their overall health state and the extent of change experienced after treatment, they report relatively good health and positive improvements as a consequence of therapy. Since elderly patients' expectations of Improvement may be modest and their expectations of physical ability relatively limited, relatively small improvements, which may not appear large when reported in effect size statistics, may be important. Standardized questionnaires, and standardized statistical methods of assessing change, may not be appropriate for this patient group. A fuller understanding of their expectations and assessment of treatment outcomes is necessary.
Keywords: congestive heart failure, Dartmouth COOP charts, health status, SF-36
Received August 16, 1996;
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