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Factor structure of the Zung Self-rating Depression Scale in first-year university students in Japan
Toshinori Kitamura1, Hitoshi Hirano, Zi Chen
1Department of Psychiatry, Kumamoto University School of Medicine, 1-1-1 Honjo, Kumamoto, Japan. kitamura@kajiu.medic.kumamoto-u.ac.jp
Abstract:
The Zung-Self-rating Depression Scale (SDS) was distributed to 28,588 first-year university students. Factor analysis using PROMAX rotation revealed three factors interpretable as affective, cognitive, and somatic symptoms. The confirmatory factor analysis showed a goodness-of-fit index of 0.976 and an adjusted goodness-of-fit index of 0.967. The two sexes exhibited virtually the same factor structure. The result suggests that studies with this scale should use these three subscales rather than a total score.
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