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The Participant-Reported Implementation Update and Score PRIUS: A Novel Method for Capturing Implementation-Related Data Over Time

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Estimation of a Preference-Based Summary Score for the Patient-Reported Outcomes Measurement Information System: The

Barry Dewitt¹, David Feeny², Baruch Fischhoff¹

¹Carnegie Mellon University, Department of Engineering and Public Policy, Pittsburgh, PA, USA.

Medical Decision Making : an International Journal of the Society for Medical Decision Making

|June 27, 2018

Abstract

Background:

Health-related quality of life (HRQL) preference-based scores are used to assess the health of populations and patients and for cost-effectiveness analyses. The National Institutes of Health Patient-Reported Outcomes Measurement Information System (PROMIS^®) consists of patient-reported outcome measures developed using item response theory. PROMIS is in need of a direct preference-based scoring system for assigning values to health states.

Objective:

To produce societal preference-based scores for 7 PROMIS domains: Cognitive Function-Abilities, Depression, Fatigue, Pain Interference, Physical Function, Sleep Disturbance, and Ability to Participate in Social Roles and Activities.

Setting:

Online survey of a US nationally representative sample ( n = 983).

Methods:

Preferences for PROMIS health states were elicited with the standard gamble to obtain both single-attribute scoring functions for each of the 7 PROMIS domains and a multiplicative multiattribute utility (scoring) function.

Results:

The 7 single-attribute scoring functions were fit using isotonic regression with linear interpolation. The multiplicative multiattribute summary function estimates utilities for PROMIS multiattribute health states on a scale where 0 is the utility of being dead and 1 the utility of "full health." The lowest possible score is -0.022 (for a state viewed as worse than dead), and the highest possible score is 1.

Limitations:

The online survey systematically excludes some subgroups, such as the visually impaired and illiterate.

Conclusions:

A generic societal preference-based scoring system is now available for all studies using these 7 PROMIS health domains.

Keywords:

PROMIS US general population health utility health-related quality of life

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