Validation of the Schizophrenia Quality of Life Scale Revision 4 among Chronic Schizophrenia Patients in Malaysia
Author | Taha, N.A. |
Author | Ibrahim, Mohamed Izham Mohamed |
Author | Rahman, A.F. |
Author | Shafie, A.A. |
Author | Rahman, A.H. |
Available date | 2022-04-10T10:25:39Z |
Publication Date | 2012 |
Publication Name | Value in Health Regional Issues |
Resource | Scopus |
Identifier | http://dx.doi.org/10.1016/j.vhri.2012.03.006 |
Abstract | Objectives: To explore the validity and reliability of a disease-specific health-related quality-of-life questionnaire-the Schizophrenia Quality of Life Scale Revision 4 (SQLS-R4)-in patients with schizophrenia in Malaysia. Methods:A total of 222 outpatients with schizophrenia receiving treatment at the Universiti Kebangsaan Malaysia Medical Centre completed the SQLS-R4 in either the Malay or the English language. A generic self-report health-related quality-of-life measure-the EuroQoL group EuroQol five-dimensional questionnaire-and a measure of symptom severity-the Clinical Global Impression-Schizophrenia scale-were also administered to assess validity. Results: Good internal consistency reliability was found for both the psychosocial and vitality domains (Cronbach's ? = 0.95 and 0.85, respectively). Most items were also significantly correlated with their own scale score (r s ranging from 0.29 to 0.74). There was a moderate correlation between the SQLS-R4 "vitality" domain and the EuroQol five-dimensional questionnaire "usual activities" domain (r s = 0.44) and a large correlation between the SQLS-R4 "psychosocial" domain and the EuroQol five-dimensional questionnaire "anxiety/depression" domain (r s = 0.44-0.57). Most of the symptom dimensions of the Clinical Global Impression-Schizophrenia scale were also moderately correlated with the SQLS-R4 subscale scores. Conclusions:The SQLS-R4 is a valid and reliable health-related quality-of-life instrument for use in minimally ill patients with schizophrenia in Malaysia, but some of the items may be redundant and irrelevant. Validation of SQLS-R4 in different types of patients and various levels of illness severity is required to further verify its application. |
Language | en |
Subject | Health-related quality of life Reliability Schizophrenia Validity |
Type | Article |
Pagination | 82-86 |
Issue Number | 1 |
Volume Number | 1 |
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Pharmacy Research [1243 items ]