alexa Time to relapse and remission of bipolar disorder: findings from a 1-year prospective study in Thailand.
Psychiatry

Psychiatry

Journal of Psychiatry

Author(s): Leelahanaj T, Kongsakon R, Choovanichvong S, Tangwongchai S, Paholpak S, , Leelahanaj T, Kongsakon R, Choovanichvong S, Tangwongchai S, Paholpak S,

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Abstract BACKGROUND AND METHODS: This study aimed to determine time to relapse and remission of mood episodes in Thai patients with bipolar disorder (BD). The Thai Bipolar Disorder Registry was a multicenter, prospective, naturalistic, observational study conducted in Thailand. Participants were adult inpatients or outpatients with Diagnostic and Statistical Manual of Mental Disorders bipolar disorder. The diagnosis of bipolar disorder, current psychiatric comorbidity, mood relapse, and mood remission were determined by using the Mini International Neuropsychiatric Interview. Relapse and remission were assessed every 2 months. RESULTS: Of 424 BD participants, 404 (95.3\%) were BD I, and 258 (60.8\%) were female. At entry, 260 (61.3\%) had recovered, and 49 (11.6\%) were recovering. During 1-year follow-up (381.7 person-years), 92 participants (21.7\%) had 119 relapses or 0.31 (95\% confidence interval 0.25-0.35) episodes per person-year. Among 119 relapses, 58 (48.7\%), 39 (32.7\%), and 21 (17.6\%) of them were depressive, hypomanic, and manic episodes, respectively. Using the Kaplan-Meier method, we found that 25\% of the participants relapsed in 361 days. Of the 400 participants who reached remission, 113 (28.2\%) had mood relapses. Of 173 mood events accountable for remission analysis, the median time to remission was 67.5 days (72.5 days for depressive episodes versus 58.0 days for manic episodes, log rank P = 0.014). CONCLUSIONS: The 1-year relapse rate in Thai patients with BD was 21.7\% or 0.31 episodes per person-year. About one-fifth of recovered patients had mood relapses within 371 days. On average, a mood episode would remit in 67.5 days.
This article was published in Neuropsychiatr Dis Treat and referenced in Journal of Psychiatry

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