Table of Contents
ISRN Psychiatry
Volume 2012 (2012), Article ID 165179, 8 pages
Research Article

Validation of Yoruba Version of Family Burden Interview Schedule (Y-FBIS) on Caregivers of Schizophrenia Patients

Department of Psychiatry, College of Medicine, University of Ibadan, P.O. Box 31395 (GPO), Ibadan, Nigeria

Received 18 February 2012; Accepted 27 March 2012

Academic Editors: S. Chakrabarti and B. J. Mitterauer

Copyright © 2012 Victor Olufolahan Lasebikan. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Objective. To validate the Yoruba version of Family Burden Interview Schedule (Y-FBIS) for assessing the burden on caregivers of persons with schizophrenia. Methods. Three hundred and sixty-eight dyads of persons with schizophrenia and their caregivers were recruited from a psychiatric outpatient clinic. The (Y-FBIS) and the Yoruba version of the GHQ-12 (Y-GHQ-12) were applied to the caregivers. Patients’ level of social functioning was assessed using the Global Assessment of Functioning scale. Results. All (368) caregivers were used for tests of internal consistency, 180 for interrater reliability, and another 180 for test-retest reliability. Internal consistency of the Y-FBIS was demonstrated by a significant Cronbach α of between 0.62 and 0.82 for each item. Concurrent validity of the Y-FBIS was illustrated by its significant positive correlation with Y-GHQ-12 ( π‘Ÿ = 0 . 6 3 3 , 𝑃 < 0 . 0 1 ). Split-half reliability was 0.849. Intraclass correlation coefficient for the total score of Y-FBIS was 0.849 at 95% confidence interval. Test-retest reliability of individual scales ranged from 0.780 to 0.874 and was 0.830 for total objective scale score. Convergent validity was shown by the significant positive correlation ( π‘Ÿ = 0 . 8 3 ) between the objective burden score and subjective burden score of Y-FBIS. ROC curve area was 0.981. Conclusion. The Y-FBIS is a valid, reliable, and sensitive instrument for assessing the burden on caregivers of persons with schizophrenia in Nigeria.