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KMID : 0368820050440050583
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Journal of the Korean Neuropsychiatr Association
2005 Volume.44 No. 5 p.583 ~ p.590
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A Validation Study of the Korean Version Mood Disorder Questionnaire(K-MDQ).
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Jon Duk-In
Yoon Bo-Hyun
Jung Han-Yong
Ha Kyoo-Seob
Shin Young-Chul
Bahk Won-Myong
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Abstract
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Objectives: This study aims to test the validity of the Korean version of Mood Disorder Questionnaire (K-MDQ), a screening instrument for bipolar disorder.
Methods: A total of 238 subjects (126 DSM-IV bipolar outpatients and 112 controls without psychiatric history) completed the K-MDQ.
Results: The Cronbach’s alpha, used to measure the internal consistency of the scale, was high (0.88). Principal component analysis with varimax rotation revealed three factors, which explained 59.5% of the variance. Individual item correlations with the total score were all statistically significant (p<0.001). The mean total score of the K-MDQ was 8.48 in bipolar disorder and 4.51 in non-clinical participants. A total K-MDQ score of 7 or more excluding further two questions was chosen as the optimal cutoff, as it provided good sensitivity (0.75) and specificity (0.69).
Conclusion: The results of this study showed adequate validity of the K-MDQ, suggesting that this instrument is useful for screening of bipolar disorder.
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KEYWORD
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Bipolar disorder, Korean version of mood disorder questionnaire (K-MDQ), Validity
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