Abstract (eng)
Depressive symptoms may be the first symptoms of cognitive decline and therefore highly important for early disease detection. The research focused on appropriateness of two questionnaires for depressive symptoms, the Beck Depression Inventory Revision (BDI II) and the Geriatric Depression Scale Short Form (GDS) in detecting early signs and conversion to dementia. Sixty-nine patients with subjective cognitive decline (SCD), seventy-two patients with mild cognitive impairment (MCI) and twenty-seven patients with Parkinson`s disease (PD) were included in the study (n = 168, mean age = 67.5 ± 9.06 years). Participants were estimated two times to establish a longitudinal view. Unexpectedly, no significant differences appeared. Result did not lent support that depressive symptoms are a risk factor for cognitive decline and dementia. Both tests failed to find an effect of depressive symptoms on cognitive decline and dementia. Thus, further investigations of depressive symptoms are indicated.