Their study showed that for the sickest patients, the average cost of an additional quality-of-life year was much higher — $488, 000.

他们研究表明，对那些病情最恶劣的患者来说，一个额外的质量生命年的平均成本则更加昂贵—48万美元。

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Zitzewitz points out, is that it would increase cost and might reduce the average quality of judges.

WSJ: Removing Judges' Bias Is Olympic-Size Challenge

The second-ranked airline in terms of overall quality was low-cost airline Jet Blue, which posted better than average performance in terms of on-time arrivals, mishandled bags and customer complaints.

FORBES: America's Best Airlines