Validity and reliability of the newly translated Cornell Scale for Depression in Dementia (CSDD) applied to Greek outpatients with depression and depression and Alzheimer's disease

Background Major depression affects about 25% of patients with Alzheimer's disease (AD) and has serious adverse consequences for patients and caregivers. Several scales have been used to quantify depression in patients with dementia. The two used most often were the Cornell Scale for Depression in Dementia (CSDD) and the Hamilton Depression Rating Scale (HDRS). Previously, for Greek speaking patients, no rating scales of depressive symptoms of patients with dementia and Alzheimer's disease (AD) have been available. None were developed or translated.