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Psychiatry Res. 2008 Feb 28;158(1):19-25. Epub 2007 Dec 21.

Subjective and objective quality of life, levels of life skills, and their clinical determinants in outpatients with schizophrenia.

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Department of Psychiatry, Institute of Health Biosciences, The University of Tokushima Graduate School, 3-18-15 Kuramoto-cho, Tokushima, Tokushima 770-8503, Japan.


The purpose of the present study is to investigate the relationships among subjective and objective quality of life (QOL), and levels of life skills, and their clinical determinants in outpatients with schizophrenia by using schizophrenia disease-specific QOL measures. Data collected from 64 outpatients were analyzed. Subjective QOL was measured with the Schizophrenia Quality of Life Scale (SQLS) and objective QOL with the Quality of Life Scale (QLS). Patients' family members completed the Life Skills Profile (LSP). Clinical symptoms were also assessed with several scales including the Brief Psychiatric Rating Scale (BPRS) and the Calgary Depression Scale for Schizophrenia (CDSS). Only the motivation/energy scale, but not the other scales of the SQLS, correlated with the QLS. The LSP rated by the family showed significant correlations with both the SQLS and the QLS. The CDSS score predicted each scale of the SQLS, and the BPRS negative symptoms score predicted the QLS. The LSP was predicted by the BPRS negative symptoms score and the CDSS score independently. These results indicate that the patient's QOL could be predicted by the life skills measured by a family member and suggest that active treatment for depressive and negative symptoms might be recommended to improve the patient's QOL and life skills.

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