Percentage of BD subtypes per participating study. Notes: BD, bipolar disorder; CAE, “Treatment Adherence Enhancement in Bipolar Disorder” study; CiBS_XR, “Cognition in Bipolar Disorder XR” study; Cog‐BD, “Cognition in Euthymic Older Adults with Bipolar Disorder” study; DOBi 1, “Dutch Older Bipolar cohort study,” wave 1; DOBi 2, “Dutch Older Bipolar cohort study,” wave 2; GERI‐SAD, “Open‐label, Prospective Trial of Lamotrigine for Symptoms of Geriatric Bipolar Depression” study; GMDD, “Geriatric Psychiatry Mood Disorders Research Database”; Inflammaging, “Dynamic Inflammatory and Mood Predictors of Cognitive Aging in Bipolar Disorder” study; McGLIDICS, “The McGill Geriatric Lithium‐Induced Diabetes Insipidus Clinical Study”; OABD_S, “Cognitive Impairment and dementia in late life bipolar disorder” study; OPT‐BD, “Asenapine in the Treatment of Older Adults with Bipolar Disorder” study; UBBDPC, “University of Barcelona's Bipolar Disorder Program Cohort”; UPMC, “The Effect of Bipolar Disorder and its Comorbidities on Cognition in Older Adults” study; Yale, “Mood Disorders Research Program Database”; ZIP‐AD, “Ziprasidone switching in response to adherence in psychotropic‐related weight gain concerns among patients with bipolar disorder” study.