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Late- versus early-onset geriatric depression in a memory research center.
OBJECTIVE: To contrast early-onset (<60 years) and late-onset (>60 years) depression in geriatric patients by evaluating differences in cognition, vascular comorbidity and sociological risk factors. Both patient groups were compared with normal subjects.
MATERIALS AND METHODS: We recruited 76 patients with depressive symptoms (37 late onset and 39 early onset) and 17 normal controls matched by age and educational level. All subjects were assessed using a semistructured neuropsychiatric interview and an extensive neuropsychological battery. Vascular and sociological risk factors were also evaluated.
RESULTS: We found a significant variation in performance between depressive patients and normal controls in most cognitive functions, especially memory (P < 0.0001), semantic fluency (P < 0.0001), verbal fluency, and digit-symbol (P < 0.0001). Late-onset depression patients scored lower and exhibited more severe impairment in memory domains than early-onset depression patients (P < 0.05). Cholesterol levels and marital status were significantly (P < 0.05) different between the depressive groups. Both depressed groups (early- and late-onset) were more inactive than controls (P < 0.05; odds ratio: 6.02).
CONCLUSION: Geriatric depression may be a manifestation of brain degeneration, and the initial symptom of a dementia. It is important to consider this in the treatment of patients that exhibit late-onset depressive symptoms.
MATERIALS AND METHODS: We recruited 76 patients with depressive symptoms (37 late onset and 39 early onset) and 17 normal controls matched by age and educational level. All subjects were assessed using a semistructured neuropsychiatric interview and an extensive neuropsychological battery. Vascular and sociological risk factors were also evaluated.
RESULTS: We found a significant variation in performance between depressive patients and normal controls in most cognitive functions, especially memory (P < 0.0001), semantic fluency (P < 0.0001), verbal fluency, and digit-symbol (P < 0.0001). Late-onset depression patients scored lower and exhibited more severe impairment in memory domains than early-onset depression patients (P < 0.05). Cholesterol levels and marital status were significantly (P < 0.05) different between the depressive groups. Both depressed groups (early- and late-onset) were more inactive than controls (P < 0.05; odds ratio: 6.02).
CONCLUSION: Geriatric depression may be a manifestation of brain degeneration, and the initial symptom of a dementia. It is important to consider this in the treatment of patients that exhibit late-onset depressive symptoms.
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