A scale for measuring patient perceptions of the quality of end-of-life care and satisfaction with treatment: the reliability and validity of QUEST.

We report on the adaptation and evaluation of a previously developed patient-centered instrument that we call the Quality of End-of-life care and Satisfaction with Treatment (QUEST) scale. In a separate group of 30 inpatients, test-retest reliability for QUEST items ranged from 63% agreement (kappa = 0.43) to 93% agreement (kappa = 0.