Patient and caregiver perspectives of quality of life in dementia. An investigation of the relationship to behavioural and psychological symptoms in dementia.

BACKGROUND/AIMS: Behavioural and psychological symptoms have a high prevalence amongst patients with dementia and can be a significant source of distress to both patients and carers. The present study explored the relationships between quality of life and behavioural and psychological symptoms in dementia (BPSD) from both patient and carer perspectives. Contextual factors surrounding the occurrence of BPSD were explored.
METHODS: Forty-six patients and 116 carers completed questionnaire measures of BPSD and quality of life.
RESULTS: BPSD were negatively associated with both patient and carer ratings of patient quality of life. The symptoms related to lower quality of life differed between patient and carer ratings: depression and irritability were found to predict lower carer ratings of quality of life, whilst delusions and apathy indicated lower patient ratings. Carers were found to be poor at identifying antecedents and consequences of BPSD.
CONCLUSIONS: The presence of BPSD is associated with lower quality of life in dementia. Interventions designed to improve the quality of life for patients should focus on the BPSD specifically associated with the patient's rating of quality of life. Information regarding the role of contextual factors in behaviour management should be made available to carers. Copyright 2008 S. Karger AG, Basel.