| 總結: | <p><b>Background:</b> There is an international valuation protocol to obtain societal values to each of the 3,125 health states of the EuroQol five-dimensional questionnaire (EQ-5D-5L). A feedback module (FM), that can be associated to theoretical models used in behavioural economics, was recently included in this protocol.</p> <p><b>Objectives:</b> To assess the impact of using a FM to estimate an EQ-5D-5L value set in Hong Kong. Methods: EQ-5D-5L health states were elicited using a composite time trade-off (C-TTO) and a discrete choice (DC) experiment. The use of the FM by participant characteristics and the impact of the FM on the number of inconsistent C-TTO responses were assessed. A main effects hybrid model that combined data from both elicitation techniques was employed.</p> <p><b>Results:</b> 1,014 individuals completed the survey. The sample was representative of the Chinese Hong Kong general population in terms of gender, educational attainment, marital status and most age groups but not on employment status. The use of the FM reduced the number of C-TTO inconsistencies. There were significant differences in terms of participant characteristics between those who used and did not use the FM. The model without a constant resulted in logical consistent coefficients and was selected as the model to produce the value set. The predicted EQ-5D-5L values ranged from -0.864 to 1.</p> <p><b>Conclusions:</b> The use of a feedback module, to allow participants to exclude C-TTO responses, reduced the number of inconsistent responses and improved the quality of the data to estimate an EQ-5D-5L value set in Hong Kong.</p>
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