A comparison of three measures
Journal of Clinical EpidemiologyPublished 1 June 2001
Yasmin Maor, Miri King, Liraz Olmer, Benjamin Mozes
Citations45
SJR quartileQ1
SJR score3.15
SNIP2.66
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TL;DR
The suspicion was that there is little similarity in the content of descriptive and valuational measures of health-related quality of life measures of HRQL, and a cross-sectional observational study of hemodialysis patients confirmed this suspicion.
Abstract
We investigated the correlation between descriptive and valuational measures of health-related quality of life (HRQL) and assessed determinants affecting these measures. Our suspicion was that there is little similarity in the content of descriptive and valuational measures of HRQL. We thus conducted a cross-sectional observational study of 56 hemodialysis patients. All underwent structured interviews. Dependent variables were patients utilities [time trade-off (TTO)], global rating of HRQL and generic HRQL (SF-36). Independent variables were socioeconomic details, disease severity, comorbidity, symptoms, depression, social support, and laboratory data. The correlation between TTO and global HRQL was -0.33 (P = .0178) and between TTO and the SF-36 physical and mental summary scores -0.16 (P = .2383) and -0.20 (P = .1443), respectively. The regression models for the SF-36 physical and mental summary scores explained 75% and 64% of the variance, and for global HRQL 29% of the variance. The independent variables had no effect on the TTO. This confirmed our suspicion that a qualitative difference exists between TTO and descriptive quality of life tools. The TTO content could not be explained by the variables that entail the content of HRQL instruments.
Keywords
MedicineEconomics, Econometrics and Finance
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