Schizophrenia Quality of Life Scale: validation of the Japanese version

Kaneda, Yasufumi; Imakura, Akira; Fujii, Akira; Ohmori, Tetsuro

doi:10.1016/s0165-1781(02)00240-8

Cited by 57 publications

(41 citation statements)

References 13 publications

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“…These two items are in the original SQLS. Their correlations with the total score of the motivation and energy domain in the SQLS were moderate-to-good (r = 0.67, 0.68) in the UK English version [3], but only fair (r = 0.39, 0.34) in the Japanese version [7]. The relatively low item-total correlations of these two items in the Japanese version of the SQLS and Chinese version of the SQLS-R4 may suggest that these two items were perceived differently from the vitality construct in Asian cultures.…”

Section: Discussionmentioning

confidence: 94%

“…In view of the limitations of existing measures, Wilkinson et al [3] developed a practical and brief self-report measure, the Schizophrenia Quality of Life Scale (SQLS), which includes 30 items in three domains: psychosocial (15 items), motivation and energy (7 items), and symptoms and side-effects (8 items). It has been translated into Japanese and tested [7]. The SQLS has gone through several revisions to improve its psychometric properties.…”

Section: Introductionmentioning

confidence: 99%

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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

Kuo

Chen-Sea

et al. 2007

Qual Life Res

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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 a = 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.

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Section: Discussionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Validation of the Chinese version of the Schizophrenia Quality of Life Scale Revision 4 (SQLS-R4) in Taiwanese patients with schizophrenia

Kuo

Chen-Sea

et al. 2007

Qual Life Res

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“…In the cross-sectional study, 99 symptomatically stabilized outpatients with a DSM-IV diagnosis of schizophrenia were assessed with the SQLS (10,11) and the QLS (9). The correlations between the scores on scales of the SQLS and the QLS total and subscales in the study are shown in Table 1.…”

Section: Relation Beween Subjective and Objective Quality Of Life Meamentioning

confidence: 99%

“…Lower scores indicate higher QOL. The Japanese version of it is often used in studies in Japan (11).…”

Section: Introduction Measurement Of Quality Of Lifementioning

confidence: 99%

Quality of life and its predictors in people with schizophrenia

Tomotake

2011

J. Med. Invest.

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“…The DrugInduced Extrapyramidal Symptom Scale (DIEPSS; Inada, 1996) was used for evaluating EPS. Schizophrenia Quality of Life Scale (SQLS; Wilkinson et al, 2000) Japanese Version (Kaneda et al, 2002) and Quality of Life Scale (QLS; Heinrichs et al, 1984) Japanese Version were used for evaluating subjective and objective QOLs, respectively. The hospitalization periods of the most of the inpatients were prolonged due to their familial and/or social circumstances, and their symptom levels were considered almost the same as those of outpatients.…”

Section: Assessment Instrumentsmentioning

confidence: 99%

Effect of antipsychotic replacement with quetiapine on the symptoms and quality of life of schizophrenic patients with extrapyramidal symptoms

Taniguchi

Sumitani

Aono

et al. 2006

Human Psychopharmacology

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Replacement of antipsychotic drugs with quetiapine (QTP) was tried in a naturalistic setting in chronic schizophrenic patients who still showed moderate psychiatric symptoms and either showed extrapyramidal symptoms (EPS) or took anti-parkinson drugs for the EPS. QTP was added on and gradually increased while the previous drugs were tapered and discontinued whenever possible. Clinical symptoms, objective and subjective QOL, and EPS were measured before and 6 months after QTP addition, using Brief Psychiatric Rating Scale (BPRS), Quality of Life Scale (QLS), Schizophrenia Quality of Life Scale (SQLS) and Drug-Induced Extrapyramidal Symptom Scale (DIEPSS), respectively. Twenty-one patients completed the trial and received the assessment. It was found that replacement with QTP-improved clinical symptoms, objective and subjective QOL and EPS. This improvement was equally observed in not only patients who switched to QTP monotherapy (n = 11) but also patients who took QTP together with reduced small doses (4.4 +/- 4.3 mg/day) of previous drugs (n = 11). The results suggest that replacement with QTP improves symptoms as well as objective and subjective QOL in a subgroup of schizophrenia.

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Schizophrenia Quality of Life Scale: validation of the Japanese version

Cited by 57 publications

References 13 publications

Validation of the Chinese version of the Schizophrenia Quality of Life Scale Revision 4 (SQLS-R4) in Taiwanese patients with schizophrenia

Validation of the Chinese version of the Schizophrenia Quality of Life Scale Revision 4 (SQLS-R4) in Taiwanese patients with schizophrenia

Quality of life and its predictors in people with schizophrenia

Effect of antipsychotic replacement with quetiapine on the symptoms and quality of life of schizophrenic patients with extrapyramidal symptoms

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