Author:
You Ruxu,Liu Jinyu,Yang Zhihao,Pan Chenwei,Ma Qinghua,Luo Nan
Abstract
Abstract
Background
This study was conducted to compare the validity and discriminative power of both the EQ-5D-3 L and EQ-5D-5 L in an elderly Chinese population with multiple chronic and acute conditions.
Methods
A total of 648 retired people from China (mean ± standard deviation: 73.3 ± 6.4 years; male: 55.7%) were recruited and randomized to complete the 3 L or 5 L questionnaire. The 3 L and 5 L were compared in terms of distribution properties, ceiling effects, informativity, validity and discriminatory performance. Convergent validity between the 3 L and 5 L was tested by spearman’s rank-order correlation. Discriminatory power was conducted by relative efficiency as assessed by the F statistics.
Results
Most participants answered to “no problems” on both versions of EQ-5D. The 5 L trended towards a slightly lower ceiling compared with the 3 L. The Shannon index improved with the 5 L while the Shannon’s Evenness index tended to be similar. Convergent validity was confirmed by the moderate to strong correlation for both 3 L and 5 L. Relative efficiency suggested that 5 L had a higher absolute discriminatory power than the 3 L version in terms of the presence conditions, especially for osteoporosis and metabolic syndrome.
Conclusions
Both the 3 L and 5 L are demonstrated to be valid based HRQoL instruments in Chinese elderly population. The 5 L system may be preferable to the 3 L, as it demonstrated superior performance with respect to lower ceiling effect and better discriminatory power. Further research is needed to examine the responsiveness of the two EQ-5D instruments in this population.
Funder
the Science and Technology Bureau of Xiangcheng District in Suzhou, China under grant
Publisher
Springer Science and Business Media LLC
Subject
Public Health, Environmental and Occupational Health,General Medicine
Cited by
8 articles.
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