Article

OBJECTIVE: To create upper-extremity and mobility subdomain scores from the
Patient-Reported Outcomes Measurement Information System (PROMIS) physical
functioning adult item bank. DESIGN: Expert reviews were used to identify
upper-extremity and mobility items from the PROMIS item bank. Psychometric
analyses were conducted to assess empirical support for scoring upper-extremity
and mobility subdomains. SETTING: Data were collected from the U.S. general
population and multiple disease groups via self-administered surveys.
PARTICIPANTS: The sample (N=21,773) included 21,133 English-speaking adults who
participated in the PROMIS wave 1 data collection and 640 Spanish-speaking Latino
adults recruited separately. INTERVENTIONS: Not applicable. MAIN OUTCOME
MEASURES: We used English- and Spanish-language data and existing PROMIS item
parameters for the physical functioning item bank to estimate upper-extremity and
mobility scores. In addition, we fit graded response models to calibrate the
upper-extremity items and mobility items separately, compare separate to combined
calibrations, and produce subdomain scores. RESULTS: After eliminating items
because of local dependency, 16 items remained to assess upper extremity and 17
items to assess mobility. The estimated correlation between upper extremity and
mobility was .59 using existing PROMIS physical functioning item parameters
(r=.60 using parameters calibrated separately for upper-extremity and mobility
items). CONCLUSIONS: Upper-extremity and mobility subdomains shared about 35% of
the variance in common, and produced comparable scores whether calibrated
separately or together. The identification of the subset of items tapping these 2
aspects of physical functioning and scored using the existing PROMIS parameters
provides the option of scoring these subdomains in addition to the overall
physical functioning score.
CI - Copyright (c) 2013 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS