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Selecting Bolt-On Dimensions for the EQ-5D: Examining Their Contribution to Health-Related Quality of Life
August 2018
August 2018
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Abstract
Generic preference-based measures may miss dimensions important for the health-related
quality of life (HRQOL) of patients. When this happens, a possible solution is to
add bolt-ons. Finch et al. (Finch AP, Brazier JE, Mukuria C, Bjorner JB. An exploratory
study on using principal component analysis and confirmatory factor analysis to identify
bolt-on dimensions: the EQ-5D case study. Value Health 2017;10:1362-75) have recently
shown that bolt-ons can be systematically identified using factor analysis. Nevertheless,
because for each bolt-on option a complete re-evaluation may be required, methods
to select between them are needed.