The symptom inventory disability-specific short forms for multiple sclerosis: construct validity, responsiveness, and interpretation

Archives of Physical Medicine and Rehabilitation
Carolyn E SchwartzTimothy Vollmer

Abstract

To test the cross-sectional and longitudinal construct validity of the disability-specific short forms of the Symptom Inventory for multiple sclerosis, to compare its internal consistency reliability and construct validity with those of the original (1999) 29-item short form of the Symptom Inventory, and to provide for the new disability-specific short forms interpretation metrics for use in sample size calculation for future research. A Web-based longitudinal study, with data collected at baseline and 6 months after baseline. Correlations evaluated the overlap among disease-specific and generic patient-reported outcome measures. Responsiveness was assessed by using symptom transition scores and modified standardized response means. Interpretation guidelines were provided by using Cohen's effect size and crosswalks to the disease-specific and generic quality-of-life measures. National Multiple Sclerosis Registry. People with multiple sclerosis (N=1142) who participated in the North American Research Committee on Multiple Sclerosis Registry. Not applicable. The Symptom Inventory; the disease-specific Performance Scales and the Patient-Determined Disease Steps; the generic Short Form 12. The Symptom Inventory evidenced convergent...Continue Reading

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Citations

Jun 4, 2013·Archives of Physical Medicine and Rehabilitation·Carolyn E SchwartzTimothy L Vollmer
Mar 27, 2012·Archives of Physical Medicine and Rehabilitation·Carolyn E SchwartzTimothy Vollmer
Sep 8, 2015·Quality of Life Research : an International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation·Bruce D Rapkin, Carolyn E Schwartz
Apr 14, 2016·Journal of Neurology·Brian M SandroffJohn DeLuca
Jan 19, 2018·Disability and Rehabilitation·Elizabeth Morghen SikesRobert W Motl
Dec 19, 2016·Quality of Life Research : an International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation·Carolyn E SchwartzBruce D Rapkin
Jan 29, 2021·Expert Review of Pharmacoeconomics & Outcomes Research·Giovanni SellittoAnna Berardi
Jan 6, 2021·Quality of Life Research : an International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation·Carolyn E SchwartzBruce D Rapkin

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