Journal List > J Korean Neuropsychiatr Assoc > v.52(4) > 1017631

Kwak, Lee, Jeong, Hong, Han, Park, Jeon, Han, and Seo: The Reliability and Validity of the Korean Version of Burden Assessment Scale (K-BAS)



This study was conducted for evaluation of the reliability and validity of the Korean version of the Burden Assessment Scale (K-BAS).


A sample of 256 first-order relatives of schizophrenics completed the K-BAS and the data were analyzed for internal consistency and factor structure. In addition, a subset of participants (n=112) refilled the K-BAS after two weeks for test-retest reliability. To test for validity, the Family Burden Scale (FBS), Korean version of Drug Attitude Inventory-10 (KDAI-10), and Korean version of the Scale to Assess Unawareness of Mental Disorder (SUMD-K) were administered.


The Cronbach's alpha coefficient of the K-BAS was high (0.91), which provided evidence for good internal consistency. The test-retest reliability of K-BAS was 0.86 (correlation coefficient, p<0.001). Convergent validity was examined through correlations between the K-BAS and the FBS (r=0.80, p<0.001). Divergent validity was examined through correlations between the K-BAS and KDAI-10 (r=-0.21, p=0.001), and between the K-BAS and SUMD-K (r=-0.02, p=0.796). Results of the factor analysis revealed a three-factor solution: activity limitation, social strain, and feelings of worry and guilt.


These results suggest that the K-BAS had good psychometric properties and may be a useful instrument for evaluation of burden of families with schizophrenics.

Figures and Tables

Table 1
Sociodemographic and clinical characteristics of the subjects (n=256)

SD : Standard deviation

Table 2
Factor loadings for each item of Korean version of Burden Assessment Scale
Table 3
Pearson's correlations between Korean version of Burden Assessment Scale and other questionnaires

*: p<0.01. K-BAS : Korean version of Burden Assessment Scale, FBS : Family Burden Scale, KDAI-10 : Korean version of Drug Attitude Inventory-10, SUMD-K : Korean version of the Scale to Assess Unawareness of Mental Disorder


The authors have no financial conflicts of interest.


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