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Validation of the Chinese Version of the Schizophrenia Quality of Life Scale Revision 4 (SQLS-R4) in Taiwanese Patients with Schizophrenia
Po-Ju Kuo, Mei-Jin Chen-Sea, Ru-Band Lu, Ming-Shun Chung, Chien-Cheng Kuo, Wei-Che Huang and Hui-Ing Ma
Quality of Life Research
Vol. 16, No. 9 (Nov., 2007), pp. 1533-1538
Published by: Springer
Stable URL: http://www.jstor.org/stable/40212631
Page Count: 6
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We tested the reliability, sensitivity, and validity of a Chinese translation of the Schizophrenia Quality of Life Scale Revision 4 (SQLS-R4). One hundred Taiwanese individuals with schizophrenia were recruited. The internal consistency reliability was satisfactory for both the psychosocial and vitality domains (Cronbach's α = 0.92, 0.84). The test-retest reliability was also high (psychosocial: ICC = 0.84, vitality: ICC = 0.84) for those individuals whose psychological conditions remained stable between the two-week interval. However, the responsiveness coefficient for those with considerable changes in psychological conditions ranged from very small to moderate, suggesting either low responsiveness for the vitality domain or a complex relationship between the change of psychological conditions and quality of life, and the need to estimate responsiveness more conclusively in a future intervention study. The convergent validity was supported by moderate-to-large correlations between domains measuring related constructs of the SQLS-R4 and SF-36 (r = -0.65 to -0.67). Overall, the results of this study provide preliminary evidence for the reliability and validity of the SQLS-R4 used in Taiwanese individuals with schizophrenia. This study provides a common ground for international researchers to understand quality of life in Taiwanese patients with schizophrenia.
Quality of Life Research © 2007 Springer