Abstract
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 (r = 0.633 , P < 0.01). 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 (r = 0.83) 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.
Highlights
Pai and Kapur’s Family Burden Interview Schedule (FBIS) is a standardized instrument for assessing family burden [1]
The psychometric properties of the FBIS were assessed in a sample of local caregivers of patients with schizophrenia, with the eventual aims of using this instrument in clinical settings and helping to implement programs to address the needs of caregivers of patients with schizophrenia
Concurrent validity of the Yoruba version of Family Burden Interview Schedule (Y-FBIS) was illustrated by its significant positive correlation with Y-General Health Questionnaire (GHQ)-12 (r = 0.744, P < 0.01) and the Positive and Negative Symptoms Scale (PANNS) (r = 0.61, P < 0.01)
Summary
Pai and Kapur’s Family Burden Interview Schedule (FBIS) is a standardized instrument for assessing family burden [1]. The FBIS has been used to assess burden among hospital attendees, as well as those residing in the community. This instrument has been used in different studies among caregivers of patients with schizophrenia [2, 3], intellectual disability [4], and obsessive compulsive disorder [5] thereby demonstrating the scope of mental health conditions among which the instrument is applicable for assessing caregiver’s burden. The psychometric properties of the FBIS were assessed in a sample of local caregivers of patients with schizophrenia, with the eventual aims of using this instrument in clinical settings and helping to implement programs to address the needs of caregivers of patients with schizophrenia
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