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. 2006 May 11;77(8):918–926. doi: 10.1136/jnnp.2006.090365

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Figure 6 Utility scores are calculated with the original EuroQol—five domains (EQ‐5D) health status system in all countries24 to obtain comparable values. The EQ‐5D permits negative scores (ie, health states worse than death) and negative scores have been set to zero in our study.