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Table 2 Key differences in studies

From: Meta-analysis of health state utility values measured by EuroQol 5-dimensions (EQ5D) questionnaire in Chinese women with breast cancer

Study Region Year of the data Sample size Levels of EQ-5D Value set
Li [23] China October 2014 to February 2015 608 Five Chinese 5L value set Luo 2017 – Time trade off (TTO)
Ou [24] Taiwan (100% Chinese) 2017 (specific time period not stated) 193 Five Chinese 5L value set Luo 2017 – Time trade off (TTO)
Wang [22] China September 2013 to December 2014 2626 Three Chinese 3L value set Liu 2014 – – Time trade off (TTO)
Cheung [21] Singapore (81% Chinese) Prior to 2013 (specific time period not stated [7]) 238 Five Japanese value set (only available Asian value set for the cross-walk project at that time).
Yang [20] China November 2017 to May 2018. 446 Five Chinese 5L value set Luo 2017 – Time trade off (TTO)