• Edward Wilson, Mariamma Thalanany, Lee Shepstone, Georgina Charlesworth, Fiona Poland, Ian Harvey, David Price, Shirley Reynolds, and Miranda Mugford.
• Health Economics Group, School of Medicine, Health Policy and Practice, University of East Anglia, UK. ed.wilson@uea.ac.uk
• Int J Geriatr Psychiatry. 2009 Jun 1;24(6):610-23.

ObjectiveThere is very little evidence on the cost-effectiveness of social care interventions for people with dementia or their carers. The BEfriending and Costs of CAring trial (BECCA, ISRCTN08130075) aimed to establish whether a structured befriending service improved the quality of life of carers of people with dementia, and at what cost.MethodsWe performed an economic evaluation alongside a single blind, randomised controlled trial in a community setting of 236 carers of people with a primary progressive dementia. The intervention was contact with a Befriender Facilitator (BF), and offer of match with a trained lay volunteer befriender compared with no BF contact. Main outcome measures were health and social care, voluntary sector, and family care costs and quality adjusted life years (QALYs) in carers over 15 months.ResultsMean QALYs per carer over 15 months were 0.017 higher in the intervention group compared with control (95%CI: -0.051, 0.083). Mean costs from a societal perspective were pound 1,813 higher (- pound 11,312, pound 14,984). The point estimate Incremental Cost Effectiveness Ratio (ICER) is thus pound 105,954 per incremental QALY gained. Probabilistic sensitivity analysis suggests a 42.2% probability that the ICER is below pound 30,000 per QALY. Inclusion of dementia patient QALYs reduces the ICER to pound 28,848 (51.4% probability below pound 30,000).ConclusionsBefriending leads to a non-significant trend towards improved carer quality of life, and there is a non-significant trend towards higher costs for all sectors. It is unlikely that befriending is a cost-effective intervention from the point of view of society.(c) 2008 John Wiley & Sons, Ltd.

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