Abstract
Objectives
To develop scoring crosswalks between a new multidomain patient-reported outcome measure,
the Functional Assessment in Acute Care (FAMCAT), with a Patient-Reported Outcomes
Measurement (PROMIS) measure of physical function, and examine correlations with existing
legacy instruments.
Design
Cross-sectional, single-group design study.
Setting
Large, Midwestern academic teaching hospital.
Participants
A sample of patients (N=1885; 53% men; average age, 62±16y) hospitalized on the general
medical services between May 2016 and June 2017.
Intervention
Not applicable.
Main Outcome Measures
Scores from the FAMCAT administered via computerized adaptive testing were compared
with scores on the 8-item PROMIS Physical Function (PROMIS PF) short form.
Results
Correlations with the FAMCAT and the PROMIS PF were strong for initial scores (MCAT_Mobilty:
r=0.78, P<.0001; MCAT_DailyAct: r=0.81, P<.0001). The Applied Cognition scale did not demonstrate adequate correlations and
thus was not a candidate for crosswalk scores. Although the MCAT_Mobility scale could
be initially linked, subsequent analysis did not support a valid crosswalk. Linking
criteria were applied with the Daily Activity scale to developing a final concordance
table.
Conclusions
The FAMCAT Daily Activity scale yielded robust correlations to develop crosswalk scores
with the PROMIS PF. The resulting crosswalk conversion metric may be useful to compare
outcomes across these constructs for assessing functional abilities among patients
on general medical services. The Applied Cognition and Basic Mobility scales did not
meet the criteria; therefore, alternate legacy instruments are needed to develop additional
crosswalks.
Keywords
List of abbreviations:
AM-PAC (Activity Measure for Post-Acute Care), CAT (computerized adaptive testing), CI (confidence interval), EQP (equipercentile method), EQP kernel (equipercentile kernel method), EQP SM (equipercentile smoothing method), FAMCAT (Functional Assessment in Acute Care MCAT), IRT (item response theory), JH-HLM (Johns Hopkins–Highest Level of Mobility Scale), PROM (patient-reported outcome measure), PROMIS PF (Patient-Reported Outcome Measure Information System Physical Function), REMSD (root expected mean square difference), RMSE (root mean squared error)To read this article in full you will need to make a payment
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Article info
Publication history
Published online: December 25, 2021
Accepted:
December 14,
2021
Received in revised form:
November 15,
2021
Received:
July 2,
2021
Footnotes
Supported by the NICHD R01 (5R01HD079439-03) grant.
Disclosures: none.
This paper is part of a supplement from the American Congress of Rehabilitation Medicine.
Identification
Copyright
© 2022 by the American Congress of Rehabilitation Medicine.
