Evaluation of options for presenting health-states from PROMIS® item banks for valuation exercises.
Janel HanmerDavid CellaDavid FeenyBaruch FischhoffRon D HaysRachel HessPaul A PilkonisDennis RevickiMark RobertsJoel TsevatLan YuPublished in: Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation (2018)
Creating health descriptions by presenting 2 items maximized the range of theta while minimizing difficulty and maintaining a monotonic relationship with utility estimates. We recommend this approach for valuation of IRT-based descriptive systems such as PROMIS.