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Background: Dementia is a persistent, progressive state of cognitive decline against which pharmacological intervention has a modest efficacy, reducing behavioral but not cognitive symptoms. Therefore, different non-pharmacological therapies have been developed; the most scientifically recognized are cognitive therapies that have improved cognitive function and daily life activities. Objective: To evaluate the effectiveness of a multicomponent cognitive stimulation therapy (SADEM) on cognitive and behavioral function and daily life activities in patients with mild stage dementia. Methods: Controlled clinical trial with pre- and post-intervention (12 months) and follow-up (24 months after) evaluations. Participants (67) diagnosed with mild dementia were randomly assigned to intervention group (n = 39) or control group (n = 28). The intervention took place throughout one year and consisted of two weekly 90-minute sessions and one more a year after a monthly follow-up. Instruments were used to evaluate outcomes in cognitive, behavioral, and affective domains. Results: The results showed statistically significant differences, with improvement in the cognitive outcomes and the Dementia Index post-intervention (p = 0.01). No progression of the disease was observed at the end of the study. Conclusion: The multicomponent intervention tested had positive effects on cognitive and behavioral functions and daily life activities in people with mild stage dementia, delaying progression for at least two years.

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