TY  - JOUR
PY  - 2020//
TI  - Predictive factors of diagnostic conversion from major depressive disorder to bipolar disorder in young adults ages 19-34: a nationwide population study in South Korea
JO  - Journal of affective disorders
A1  - Kim, Hyewon
A1  - Kim, Yuwon
A1  - Baek, Ji Hyun
A1  - Fava, Maurizio
A1  - Mischoulon, David
A1  - Nierenberg, Andrew A.
A1  - Choi, Kwan Woo
A1  - Na, Eun Jin
A1  - Shin, Myung-Hee
A1  - Jeon, Hong Jin
SP  - 52
EP  - 58
VL  - 265
IS  - 
N2  - BACKGROUND: Predicting patients who convert to bipolar disorder is important for deciding appropriate treatment for young adults with major depressive disorder (MDD). We focused on the predictive factors of bipolar conversion in a large population of young adults. <br><br>METHODS: A nationwide, population-based electronic medical records database from the Health Insurance Review & Assessment service of South was used to investigate adjusted hazard ratio (HR) of each potential predictor of the bipolar converter group compared to the non-converter group using Cox regression analysis including age of onset, medication use, clinical features, comorbid disorders, admission, self-harm, and negative life events in childhood. <br><br>RESULTS: Among 291,721 subjects who were initially diagnosed with MDD in young adults, 12,376 subjects experienced diagnostic conversion to bipolar disorder. The cumulative incidence was 6.46% during the average 3.26 years of follow-up. Among the predictive factors during diagnosis of MDD, antipsychotic use (HR 3.12, 95%CI, 2.99-3.26, p < 0.0001) and mood stabilizers (HR 2.45, 95%CI, 2.35-2.55, p < 0.0001) showed the strongest association with diagnostic conversion to bipolar disorder. In addition, female sex, younger age of onset, mood stabilizer use, recurrent depression, psychotic symptoms, and admission to a psychiatric ward during diagnosis of MDD were also associated with diagnostic conversion to bipolar disorder. <br><br>CONCLUSION: In young adults with MDD, antipsychotic and mood stabilizer use during diagnosis of MDD were the strongest predictive factors with diagnostic conversion to bipolar disorder during follow-up. If young adults with MDD need antipsychotics or mood stabilizer, patients should be carefully evaluated for possibility of bipolar disorder.<br><br>Copyright © 2020 Elsevier B.V. All rights reserved.<p />  <p>Language: en</p>
LA  - en
SN  - 0165-0327
UR  - http://dx.doi.org/10.1016/j.jad.2020.01.009
ID  - ref1
ER  -