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Year : 2013  |  Volume : 22  |  Issue : 2  |  Page : 109-113

Internal consistency and factor structure of 12-item general health questionnaire in visually impaired students

1 Department of Psychiatry, Rajendra Institute of Medical Sciences, Ranchi, Jharkhand, India
2 Department of Psychiatry, Ranchi Institute of Neuropsychiatry and Allied Sciences, Kanke, Ranchi, Jharkhand, India
3 Department of Psychiatry, Kasturba Medical College, Manipal, Karnataka, India
4 Professor of Psychiatry, Central Institute of Psychiatry, Ranchi, Jharkhand, India

Correspondence Address:
Ajay Kumar Bakhla
Assistant Professor of Psychiatry, Rajendra Institute of Medical Sciences, Ranchi - 834 009, Jharkhand
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0972-6748.132918

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Background: As there are no instruments to measure psychological wellness or distress in visually impaired students, we studied internal consistency and factor structure of GHQ-12 in visually impaired children. Materials and Methods: Internal consistency analysis (Cronbach's alpha and item total correlation) and exploratory factor analysis (principal component analysis) were carried out to identify factor structure of 12-item general health questionnaire (GHQ-12). Results: All items of GHQ-12 were significantly associated with each other and the Cronbach's alpha coefficient for the scale was 0.7. On analysis of principal component, three-factor solution was found that accounted for 47.92% of the total variance. The factors included, 'general well-being', 'depression' and 'cognitive', with Cronbach's alpha coefficients being 0.70, 0.59, and 0.34, respectively. Conclusion: Our study findings suggest GHQ-12 is a reliable with adequate internal consistency scale and multidimensional factor structure in visually impaired students.

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