Stroke Impact Scale 3.0: Reliability and Validity Evaluation of the Korean Version

Area of Science:

• Rehabilitation Medicine
• Neurology
• Psychometrics

Background:

• Stroke significantly impacts patients' quality of life.
• Accurate assessment tools are crucial for monitoring recovery and treatment effectiveness.
• The original Stroke Impact Scale (SIS) is widely used, necessitating culturally adapted versions.

Purpose of the Study:

• To establish the reliability and validity of the Korean version of the Stroke Impact Scale (K-SIS) 3.0.
• To evaluate the K-SIS 3.0's suitability for assessing stroke survivors in a Korean population.

Main Methods:

• Seventy post-stroke patients were enrolled in the study.
• Participants underwent assessments including general characteristics, MMSE, NIHSS, MBI, HADS, SF-36, and K-SIS 3.0.
• Statistical analyses, including Cronbach's alpha and Spearman's rho, were performed to determine reliability and validity.

Main Results:

• The K-SIS 3.0 demonstrated good internal consistency (Cronbach's alpha > 0.70) across all domains.
• Test-retest reliability was generally high (Spearman's rho > 0.5), with minor exceptions.
• Concurrent validity was confirmed through positive correlations with similar domains in the SF-36, HADS, MMSE, and NIHSS.

Conclusions:

• The K-SIS 3.0 exhibits high inter-intra and test-retest reliability.
• The K-SIS 3.0 possesses strong concurrent validity when compared to established scales.
• The K-SIS 3.0 is a reliable and valid instrument for assessing health-related quality of life and treatment efficacy in Korean stroke patients.