Does Weighting Capture What’s Important? Revisiting Subjective Importance Weighting with a Quality of Life Measure |
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| Authors: | Lara B Russell Anita M Hubley Anita Palepu Bruno D Zumbo |
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| Institution: | (1) University of British Columbia, Vancouver, Canada;(2) Dept. of ECPS, University of British Columbia, 2125 Main Mall, Vancouver, BC, V6T 1Z4, Canada;(3) St. Paul’s Hospital, University of British Columbia and Division of Internal Medicine, Vancouver, Canada |
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| Abstract: | The present study evaluated subjective importance weighting using data collected with the Injection Drug User Quality of Life
Scale (IDUQOL). Weighted and unweighted IDUQOL scores from 241 adults were correlated with convergent, discriminant, and criterion
measures. Regression analysis was used to examine the contribution of importance ratings to scores on a global measure of
life satisfaction and the corrected weighted IDUQOL total scores. Overall, the results showed that weighted scores did not
perform better than unweighted scores in measuring quality of life. However, the mean satisfaction ratings for important domains
correlated significantly higher with convergent measures than did the mean satisfaction ratings for unimportant domains. This
finding suggests further attention needs to be paid to the meaning and measurement of subjective importance and how it may
be incorporated more effectively into measures of quality of life. |
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| Keywords: | health importance weights measurement psychometrics quality of life subjective weighting |
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