Establishing the reliability and validity of the Zagazig Depression Scale in a UK student population : an online pilot study

KHAIR, A M, KELLY, Shona J, CHALLONER, Emily C and GLAZEBROOK, Cris (2010). Establishing the reliability and validity of the Zagazig Depression Scale in a UK student population : an online pilot study. BMC Psychiatry, 10, p. 107.

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Link to published version:: 10.1186/1471-244X-10-107

Abstract

Background: It is thought that depressive disorders will be the second leading cause of disability worldwide by 2020. Recently, there is a steady increase in the number of university students diagnosed and treated as depression patients. It can be assumed that depression is a serious mental health problem for university students because it affects all age groups of the students either younger or older equally. The current study aims to establish the reliability and validity of the Zagazig Depression scale in a UK sample. Methods: The study was a cross-sectional online survey. A sample of 133 out of 275 undergraduate students from a range of UK Universities in the academic year 2008-2009, aged 20.3 ± 6.3 years old were recruited. A modified back translated version of Zagazig Depression scale was used. In order to validate the Zagazig Depression scale, participants were asked to complete the Patient Health Questionnaire. Statistical analysis includes Kappa analysis, Cronbach's alpha, Spearman's correlation analysis, and Confirmatory Factor analysis. Results: Using the recommended cut-off of Zagazig Depression scale for possible minor depression it was found that 30.3% of the students have depression and higher percentage was identified according to the Patient Health Questionnaire (37.4%). Females were more depressed. The mean ZDS score was 8.3 ± 4.2. Rates of depression increase as students get older. The reliability of The ZDS was satisfactory (Cronbach's alpha was .894). For validity, ZDS score was strongly associated with PHQ, with no significant difference (p-value > 0.05), with strong positive correlation (r = +.8, p-value < 0.01). Conclusion: The strong, significant correlation between the PHQ and ZDS, along with high internal consistency of the ZDS as a whole provides evidence that ZDS is a reliable measure of depressive symptoms and is promising for the use of the translated ZDS in a large-scale cross-culture study.

Item Type: Article
Research Institute, Centre or Group: Centre for Health and Social Care Research
Identification Number: 10.1186/1471-244X-10-107
Depositing User: Shona Kelly
Date Deposited: 31 Jan 2013 14:41
Last Modified: 31 Jan 2013 14:41
URI: http://shura.shu.ac.uk/id/eprint/6668

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