Abstract
Purpose The QUAlity of Life Assessment in Spina bifida (QUALAS) for adults (QUALAS-A) evaluates the health-related quality of life (HRQOL), reflecting the condition specificity of adults with spina bifida (SB). The study’s purpose was to translate and cross-culturally adapt the QUALAS-A into Korean and validate a Korean-modified version of the QUALAS for Young Adults (QUALAS-YA-Km). Method Face and content validity were evaluated in the pilot study. Internal consistency and test-retest reliability were confirmed in the main study. Factor analysis was performed, and convergent and divergent validity was verified using the World Health Organization Quality of Life assessment instrument abbreviated version (WHOQOL-BREF). Results Forty-seven adults had myelomeningocele. Five items with low communality were deleted through the factor analysis, and the domains were renamed. The QUALAS-YA-Km showed good internal consistency (Cronbach’s alpha 0.73–0.83) and excellent test-retest reliability (intraclass correlation coefficient 0.84–0.89). The QUALAS-YA-Km showed good convergent and divergent validity, with weak to strong correlations with the WHOQOL-BREF. Conclusions Developed with consideration of Korea’s cultural characteristics, the QUALAS-YA-Km is a convenient and reliable instrument, with good internal consistency, stability, and construct validity. This can be a useful tool in clinical and research settings for HRQOL optimization in young adults with SB. Implications for Rehabilitation Optimizing health-related quality of life (HRQOL) is one of the goals of people with spina bifida (SB), which requires HRQOL measurements that reflect the condition specificity of SB The QUAlity of Life Assessment of Spina bifida for Adults (QUALAS-A) is a self-reported HRQOL questionnaire for adults with SB developed in the United States, which is used in research and clinical practice The present study revealed that the Korean modified version of the QUAlity of Life Assessment of Spina bifida for Young Adults (QUALAS-YA-Km), developed in consideration of the cultural characteristics of Korea, is a valid, convenient, and reliable tool The QUALAS-YA-Km, is a useful tool that can be used in clinical and research settings for HRQOL optimization in adults with SB
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