Related Experiment Videos
The stroke impact scale version 2.0. Evaluation of reliability, validity, and sensitivity to change
P W Duncan1, D Wallace, S M Lai
1Center on Aging, Department of Preventative Medicine, University of Kansas Medical Center, Kansas City, USA. pduncan@kumc.edu
Stroke
|October 8, 1999
Summary
The Stroke Impact Scale (SIS) Version 2.0 is a reliable, valid, and sensitive outcome measure for stroke research. This stroke-specific tool demonstrates strong psychometric properties for assessing patient recovery.
Area of Science:
- Neurology
- Rehabilitation Medicine
- Psychometrics
Background:
- Clinical research requires outcome measures with proven feasibility, reliability, validity, and sensitivity to change.
- The Stroke Impact Scale (SIS) Version 2.0 is a stroke-specific self-report measure designed for assessing patient outcomes.
Purpose of the Study:
- To characterize the psychometric properties of the Stroke Impact Scale (SIS) Version 2.0.
- To evaluate the reliability, validity, and responsiveness of the SIS V2.0 for clinical research applications.
Main Methods:
- Administered the 64-item SIS Version 2.0 to mild and moderate stroke survivors at 1, 3, and 6 months post-stroke.
- Assessed internal consistency, test-retest reliability, construct validity (correlations with existing measures and Rankin scale levels), and responsiveness to change using mixed-effects models.
Main Results:
- All 8 SIS domains demonstrated good internal consistency (alpha >= 0.9).
- Test-retest reliability was high (ICC 0.70-0.92), except for the emotion domain (0.57).
- SIS domains showed moderate to strong correlations with established measures and discriminated across Rankin levels, indicating validity and responsiveness to recovery.
Conclusions:
- The Stroke Impact Scale (SIS) Version 2.0 is a reliable, valid, and sensitive outcome measure for stroke research.
- Further studies are needed to assess SIS utility in diverse populations and explore proxy responses for severely impaired patients.