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Life sciences · Observational Study
ClinicalTrials.gov · October 5, 2026
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Observational Study.
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Registry record from ClinicalTrials.gov (NCT07857213). This is a study registration, not published results. Lead sponsor: Istanbul University - Cerrahpasa. Recruitment status: COMPLETED. Study type: OBSERVATIONAL. Enrollment: 120 participants (ACTUAL). Conditions: Bipolar Disorder in Remission, Major Depression in Remission. Primary outcome measures: Seasonal Pattern Assessment Form , once at the first meeting; Morningness-Eveningness Questionnaire , once at the first meeting; Barratt Impulsiveness Scale (BIS-11) , At baseline and months 3, 6, 9; Beck Scale for Suicidal Ideations , At baseline and months 3, 6, 9; Structured Interview Guide for the Hamilton Depression Rating Scale-Seasonal Affective Disorder Version (SIGH-SAD) , At baseline and months 3, 6, 9; Body Mass Index , At baseline and months 3, 6, 9. Brief summary: The aim of the study is to examine the seasonal variation of suicidal ideation in patients with mood disorders and the trajectory of impulsivity and suicidal ideation in patients with higher seasonality. It also aims to identify seasonal and chronotype factors that contribute to the development of impulsivity and suicidal ideation.