Influence of social interaction on behavioral and psychological symptoms of dementia over 1 year among long-term care facility residents.

Abstract This study investigated the effect of social interaction including activity participation, relationships with residents, and communication with family/relatives and friends at baseline on the behavioral and psychological symptoms of dementia (BPSD) among long-term care facility residents over 1 year. This follow-up study was conducted among older adult residents with dementia or similar symptoms. Generalized linear mixed effect models were used to examine associations between social interaction and changes in the number and severity of BPSD symptoms over 1 year. Among 220 participants, rare participation in activities and poor relationships with other residents at baseline were associated with greater baseline BPSD. Less communication with family/relatives at baseline was associated with increased severity of BPSD over 1 year. Active interaction with family and relatives may prevent progression of BPSD severity among long-term care facility residents for at least 1 year.