Publication date: Available online 13 September 2018
Source: Archives of Physical Medicine and Rehabilitation
Author(s): Jeff Houck, Daniel Kang, Tyler Cuddeford, Sarah Rahkola
Abstract
Objectives
To determine if the patient reported outcome information system (PROMIS) physical function (PF), pain interference (PI), self-efficacy (SE) and global rating of normal function (GRNF) scales are able to accurately characterize a patient’s acceptable symptom state (PASS).
Design
A cross sectional analysis, using receiver operator curves and chi-square analysis to explore criteria to determine thresholds (80/95% sensitivity/specificity) for PASS that are applicable to PROMIS and GRNF scales.
Setting
Phone survey after primary care
Participants
Ninety-four patients attending primary care for musculoskeletal problems.
Interventions
Not Applicable
Main Outcomes Measures
Accuracy and proportion of patients classified as PASS Yes or No.
Results
Receiver operator curve analysis showed significant area under the curve(AUC) values for each PROMIS scale (AUC >0.72) and the GRNF rating (AUC=0.74). Identified PROMIS thresholds suggested PASS was achieved when scores were at or slightly worse than the US population average. A score of 7 or higher and 4 or lower characterized patients that were PASS Yes/No, respectively, on the GRNF rating. A moderate (80%) specificity/sensitivity criteria yielded 72.3-73.5%% accuracy for a majority of participants (>69.9%).
Conclusion
This analysis suggests the PROMIS and GRNF scales are able to characterize PASS status with moderate accuracy (∼70%) for a large portion of patients (∼70%). New to this study is the association of self-efficacy with PASS status. PROMIS scales at or slightly worse than the US population average characterized PASS status.
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