Evaluating the impact of ‘bolt-on’ items to EQ-5D: results from the NICEQoL project

Thursday 1 November 2012, 2.00PM to 3.15pm

Speaker(s): Louise Longworth, Reader in Health Economics, HERG, Brunel University

Abstract: The EQ-5D is a commonly used measure of quality of life and is widely used in economic evaluations of health interventions; however there are concerns about its validity and responsiveness in some specific conditions. One potential solution to this problem is to develop ‘bolt-on’ items to the EQ-5D.

In this seminar I will present results from the NICEQoL project. Three potential bolt-on items to EQ-5D were developed to describe the following health problems:  vision impairment, hearing impairment and tiredness. All three were tested in an exploratory study and the bolt-on for vision impairment was then selected for full valuation. EQ-5D states with and without the ‘Vision’ item were valued using the time trade-off method in a sample of the general population. Random effects models were used to analyse the data for EQ-5D with and without the bolt-on item separately. The results from the studies demonstrated that all three potential bolt-on items had a significant impact on EQ-5D health state values. Furthermore, the analysis of EQ-5D+Vision suggest that the impact of the bolt-on item depends upon the severity of the EQ-5D state to which it is added.

Location: ARRC Auditorium A/RC/014

Who to contact

For more information on these seminars, contact:

Maria Jose Aragon
Jessica Ochalek

CHE Seminar Programme

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    Jon Sussex, Chief Economist, RAND Europe
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