The analysis is part of the Vienna Transdanube Aging Study, a prospective, community-based cohort study of all 75-year-old inhabitants of 2 Viennese districts. Current depressive symptoms were captured with a DSM-IV-TR-based questionnaire. Diagnosis of possible or probable Alzheimer's dementia was performed according to criteria by the National Institute of Neurologic and Communicative Disorders and Stroke and the Alzheimer's Disease and Related Disorders Association