Case types were developed using the approach adopted by (Challis et al., 2014). As is the case in many jurisdictions, there is no single data set available in Ireland with all the required variables to generate case types, so data from several sources were combined. The case types were developed mainly from an Irish data set of anonymised home care assessments of 277 people with dementia in an urban area (O'Brien et al., 2017). Four variables were used to generate the initial dementia case types: dependency measured by the Barthel Index, falls risk, living alone, communication difficulty (See Table 1). A set of dementia case types with all the possible combinations of the four variables was firstly generated, resulting in 24 case types. A sub-set of six case types, comprising 46 per cent of the dementia case types in the dataset was then selected for the study. The level of cognitive impairment for the case types was derived using a dataset of anonymised InterRai assessments (HSE, 2017) for 453 inpatients over 65 some of whom had been diagnosed with dementia. Further discriminating variables were sourced from the literature, specifically Behavioural and Psychological Symptoms of Dementia (BPSD) and Comorbidities. In previous balance of care studies, the attitudes to care mainly focused on attitudes to nursing home care (Tucker et al., 2016). However, in this study as the research question is more focused on the continuum of care, attitudes to care cover preferences in relation to spending, privacy, day-care attendance, carer preferences and attitudes to nursing home care.
Unit CostsUnit costs for these services were calculated based on Irish Health Service Executive staff pay scales and the Irish literature on unit costs (O'Shea & Monaghan 2016). The full service cost, including voluntary, public and private funding, was used irrespective of the funding source, so that service prioritisation could be compared on a like for like basis. The full cost of a Psychiatry of Old Age referral and a carer education programme were included in the budget allocation for the hypothetical month, although in practice this cost may be spread over a longer period.