Aim: List care activities of formal and informal carers and calculate costs of care for elderly people with dementia. Comparison with those not suffering from dementia (control group) at home and in residential settings. Methods: The combined methodology of a retrospective questionnaire and a prospective diary was used to collect individual data on the use of health care (professional and informal care). Results and conclusions: For home care, we found that professional care and costs of materials does not differ in any significant way between the dementia group and the control group.