Factors Affecting Health-Related Quality of Life in Persons with Stroke Using SF-6D

Korean J Health Promot > Volume 11(2); 2011 > Article

Korean Journal of Health Promotion 2011;11(2):72-81.

SF-6D를 이용한 일개 지역사회의 뇌졸중 장애환자의 건강관련 삶의 질에 미치는 요인 분석

김상규1, 조민우2, 김선하2, 손우승2, 이진용3, 이상일2

¹동국대학교 의과대학 예방의학교실, ²울산대학교 의과대학 예방의학교실, ³건양대학교 의과대학 예방의학교실

Factors Affecting Health-Related Quality of Life in Persons with Stroke Using SF-6D

Abstract

Background
The SF-6D, derived from the SF-36, is a preference-based instrument measuring health-related quality of life (HRQOL). Using this tool, we measured the HRQOL of persons disabled by stroke dwelling in Gyeongju city and identified factors affecting the HRQOL. Methods: As of March 2008, 991 persons who had had a stroke and were aged 50 and over were identified on the Gyeongju city disabled registry. Interviewers specifically trained for this face-to-face survey gathered pertinent information including general and clinical characteristics from June to October 2008. In addition, the health status was measured using the Modified Rankin Scale, the Barthel ADL index, and the SF-36. The SF-6D index was derived from the SF-36. We analyzed the known-group construct validity and convergent validity. Finally, we performed multiple regression analyses to identify factors affecting the HRQOL. Results: Of the 991 potential subjects, 498 persons participated in the interviews (response rate: 50.3%). The SF-6D indices for females and those aged 70 and over were lower than indices for males and those aged 60 and less. Correlation coefficients between the Modified Rankin Scale, the Barthel index, and the SF-6D index were relatively high (-0.533 and 0.555, respectively) and statistically significant (P<0.001). Multiple regression analyses showed that sex, age, smoking, alcohol use, comorbidity, the Modified Rankin Scale, and the Barthel index had an effect on the SF-6D index of persons with stroke, and the Barthel index was the most important factor. Conclusions: Our results indicate that the SF-6D can be a valid tool for evaluating health states of persons disabled by stroke, and functional limitation was the main factor affecting the HRQOL.