Abstract
PurposeSo far there is no Norwegian value algorithm to inform healthcare decision making. The 15D health state values estimated with the original 15D valuation procedure tend to be higher than the values of other generic preference-based health-related quality of life (HRQoL) instruments. The main purpose of this study was to use a new 15D valuation procedure to estimate Norwegian 15D health state values and to explore their empirical performance.MethodsThe visual analogue scale was used to collect 15D valuation data in a representative sample of the Norwegian general population. The new procedure used fewer valuation tasks and anchored the 15D health state values in an empirically assessed range. The Norwegian 15D health state values were compared to the values of five HRQoL instruments which were provided by Norwegian residents belonging to seven disease groups and a healthy population.ResultsThe Norwegian 15D health state values ranged from 1 to − 0.52. Compared to 15D health state values estimated with the original procedure, the Norwegian 15D health state values were lower and more in line with values of other HRQoL instruments.ConclusionsThe new 15D valuation procedure is simpler, links the 15D health state values better to the requirements of the QALY model, and provides an empirically-based range. We recommend using the new valuation procedure in future 15D valuation studies, and the Norwegian health state values for use in 15D-based health economic analyses in Norway.
Highlights
The 15D is a generic preference-based health-related quality of life (HRQoL) instrument that can be used to provide preference-weights for quality-adjusted life-year (QALY) calculations when paired with valuation data [1, 2]
Compared to the 15D health state values that were calculated with the original valuation procedure, the Norwegian 15D health state values were lower and closer to corresponding values of other generic preference-based instruments
As the value for the worst possible health state is assessed in relation to “being dead,” the resulting health state values fulfill the requirement of the QALY model better than the original 15D health state values as they are on a ratio-scale with a clearly defined zero
Summary
The 15D is a generic preference-based health-related quality of life (HRQoL) instrument that can be used to provide preference-weights for quality-adjusted life-year (QALY) calculations when paired with valuation data [1, 2] There is no value algorithm (or tariff, or value set) based on preferences of the Norwegian general adult population for any generic preference-based HRQoL instrument. It is the main aim of this study to use a new 15D valuation procedure to estimate a Norwegian 15D value algorithm. We compared the resulting Norwegian 15D health state values with corresponding values of other generic preference-based instruments collected in seven disease groups and a healthy sample
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