Young Sup Woo1, In Hee Shim2, Hee-Ryung Wang1, Hoo Rim Song1, Tae-Youn Jun1, Won-Myong Bahk3. 1. Department of Psychiatry, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea. 2. Department of Psychiatry, Cancer Center, Dongnam Institute of Radiological & Medical Sciences, Busan, Republic of Korea. 3. Department of Psychiatry, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea. Electronic address: wmbahk@catholic.ac.kr.
Abstract
BACKGROUND: The major aims of this study were to identify factors that may predict the diagnostic conversion from major depressive disorder (MDD) to bipolar disorder (BP) and to evaluate the predictive performance of the bipolar spectrum disorder (BPSD) diagnostic criteria. METHODS: The medical records of 250 patients with a diagnosis of MDD for at least 5 years were retrospectively reviewed for this study. RESULTS: The diagnostic conversion from MDD to BP was observed in 18.4% of 250 MDD patients, and the diagnostic criteria for BPSD predicted this conversion with high sensitivity (0.870) and specificity (0.917). A family history of BP, antidepressant-induced mania/hypomania, brief major depressive episodes, early age of onset, antidepressant wear-off, and antidepressant resistance were also independent predictors of this conversion. LIMITATIONS: This study was conducted using a retrospective design and did not include structured diagnostic interviews. CONCLUSIONS: The diagnostic criteria for BPSD were highly predictive of the conversion from MDD to BP, and conversion was associated with several clinical features of BPSD. Thus, the BPSD diagnostic criteria may be useful for the prediction of bipolar diathesis in MDD patients.
BACKGROUND: The major aims of this study were to identify factors that may predict the diagnostic conversion from major depressive disorder (MDD) to bipolar disorder (BP) and to evaluate the predictive performance of the bipolar spectrum disorder (BPSD) diagnostic criteria. METHODS: The medical records of 250 patients with a diagnosis of MDD for at least 5 years were retrospectively reviewed for this study. RESULTS: The diagnostic conversion from MDD to BP was observed in 18.4% of 250 MDDpatients, and the diagnostic criteria for BPSD predicted this conversion with high sensitivity (0.870) and specificity (0.917). A family history of BP, antidepressant-induced mania/hypomania, brief major depressive episodes, early age of onset, antidepressant wear-off, and antidepressant resistance were also independent predictors of this conversion. LIMITATIONS: This study was conducted using a retrospective design and did not include structured diagnostic interviews. CONCLUSIONS: The diagnostic criteria for BPSD were highly predictive of the conversion from MDD to BP, and conversion was associated with several clinical features of BPSD. Thus, the BPSD diagnostic criteria may be useful for the prediction of bipolar diathesis in MDDpatients.
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