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The psychometric parameters of the Farsi form of the Kessler Psychological Distress Scale (K10) in psychiatric outpatients

Authors: Mahboubeh Dadfar, David Lester, Mohammad Kazem Atef Vahid* and Mehdi Nasr Esfahani

Int J Med Res Health Sci.2016, 5, 2:1-7 | pdf PDF Full Text

The aim of this study was to describe the psychometric properties of the Farsi form of the Kessler Psychological
Distress Scale (K10). The translated Farsi Form of the K10 was used, and administered to a total of 128 Iranian
psychiatric outpatients from Tehran. One-week test-retest was 0.85 indicating its high temporal stability.
Cronbach’s alpha value and Spearman-Brown coefficient of the K10 reached 0.92, Split-Half 0.85, indicating its
good internal consistency. The K10 correlated 0.73with the General Health Questionnaire (GHQ-12), 0.80 with the
Beck Depression Inventory (BDI-13), 0.29 with the Beck Hopelessness Scale (BHS), 0.42 with the Beck Suicidal
Ideation Scale (BSIS), and 0.62 with the Wish to be Dead Scale (WDS) indicating good criterion-related validity.
Finally, a principal axis analysis with Varimax rotation was carried out. Two factors were extracted, accounting for
73.22% of the total variance. These factors were labeled: Anxiety (59.07%), and Depression (14.65%). The results
indicate that the K-10 administered to this Iranian sample yields good internal consistency, temporal stability,
criterion-related validity and a two-factor structure reflecting important features of psychological distress. In
general, the K10 could be recommended in research on anxiety and depression among Iranian psychiatric
Keywords: Psychological distress, Kessler Psychological Distress Scale (K10), Farsi form, Psychiatric outpatients

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