Chinese Version of the EQ-5D Preference Weights: Applicability in a Chinese General Population

Abstract

ObjectivesThis study aimed to test the reliability, validity and sensitivity of Chinese version of the EQ-5D preference weights in Chinese general people, examine the differences between the China value set and the UK, Japan and Korea value sets, and provide methods for evaluating and comparing the EQ-5D value sets of different countries.MethodsA random sample of 2984 community residents (15 years or older) were interviewed using a questionnaire including the EQ-5D scale. Level of agreement, convergent validity, known-groups validity and sensitivity of the EQ-5D China, United Kingdom (UK), Japan and Korea value sets were determined.ResultsThe mean EQ-5D index scores were significantly (P<0.05) different among the UK (0.964), Japan (0.981), Korea (0.987), and China (0.985) weights. High level of agreement (intraclass correlations coefficients > 0.75) and convergent validity (Pearson’s correlation coefficients > 0.95) were found between each paired schemes. The EQ-5D index scores discriminated equally well for the four versions between levels of 10 known-groups (P< 0.05). The effect size and the relative efficiency statistics showed that the China weights had better sensitivity.ConclusionsThe China EQ-5D preference weights show equivalent psychometric properties with those from the UK, Japan and Korea weights while slightly more sensitive to known group differences than those from the Japan and Korea weights. Considering both psychometric and sociocultural issues, the China scheme should be a priority as an EQ-5D based measure of the health related quality of life in Chinese general population.

Does the choice of tariff matter?

“…This observation is consistent with the previous study conducted in the Chinese general population using the EQ-5D-3L tariffs. [ 24 ] However, the absolute mean utility differences between each of the 2 tariffs varied in these 2 Chinese studies. Regarding the UK versus Japanese tariff, this study found a significantly higher mean utility score from the UK tariff than the Japanese tariff.…”

Conservative vs Surgical Treatment of Impacted Femoral Neck Fracture in Patients 75 Years and Older

“…The responses to the five dimensions were translated into a single preference-based summary score (ie, EQ-5D index score), anchored on an interval where 0 and 1 represented death and full health, respectively. 23 Hip pain of the three groups was evaluated with visual analogue scale (VAS) in which the score ranged from 0 to 10, with 0 representing no pain, and 10 representing severe pain.…”

Comparison of EQ-5D-5L health state utilities using four country-specific tariffs on a breast cancer patient sample in mainland China

“…The finding is consistent with previous studies which adopted the EQ-5D-3L instrument and corresponding value sets. For example, a study based on the Chinese general population showed that the EQ-5D-3L utility scores derived using Chinese, Japanese, Korean, and UK tariffs have excellent agreement (ICC >0.75) 26. In another study, the agreement between UK and Japanese tariffs was very high among Thai diabetes patients 27.…”

“…Literature indicates that different cultures could influence the derived utility scores 31,32. Previous studies regarding the EQ-5D-3L instrument and its tariffs showed that it would be better to choose tariffs with similar cultural backgrounds 26,27,33. Our study supports previous findings about the excellent agreement on different country-specific tariffs, as well as the good known-groups validity in all four tariffs.…”