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Establishing the Test-Retest Reliability and Minimal Detectable Change of the Multiple Sclerosis Resiliency Scale
Elizabeth S Gromisch1,2,3,4, Aaron P Turner5,6,7,8, Lindsay O Neto1,2
1Mandell Center for Multiple Sclerosis, Mount Sinai Rehabilitation Hospital, Trinity Health Of New England, Hartford, CT, USA (ESG, LON, JAR, ACL).
International Journal of MS Care
|January 30, 2023
Summary
The Multiple Sclerosis Resiliency Scale (MSRS) shows good test-retest reliability for assessing resilience in individuals with multiple sclerosis. A change of 12 points or more indicates a reliable change in resilience for MS patients.
Area of Science:
- Psychometric validation
- Neurology
- Rehabilitation
Background:
- The Multiple Sclerosis Resiliency Scale (MSRS) assesses resilience in individuals facing multiple sclerosis (MS) challenges.
- Previous studies confirmed MSRS's internal consistency and construct validity.
- Test-retest reliability and minimal detectable change (MDC) of the MSRS were not yet established.
Purpose of the Study:
- To determine the test-retest reliability of the MSRS.
- To establish the minimal detectable change (MDC) for the MSRS.
Main Methods:
- 62 individuals with MS completed the MSRS twice, 14-30 days apart.
- Test-retest reliability was assessed using intraclass correlation coefficients (ICC).
- Bland-Altman plots visualized agreement; MDC was calculated using the standard error of measurement.
Main Results:
- The MSRS demonstrated good test-retest reliability (ICC = 0.88).
- Subscale ICCs ranged from 0.77 (MS Peer Support) to 0.93 (Spirituality).
- The MDC for the total score was 11.95 points.
Conclusions:
- The MSRS exhibits good test-retest reliability in persons with MS.
- A difference of 12 points or more on the MSRS signifies a reliable change.
- Findings support the MSRS's utility as an outcome measure for MS resilience interventions.
