Therefore, detailed studies are needed to complement more general information with a specific focus on care, by type of illness, and to distinguish between the time invested in prevention from time spent on care relating to an illness (Dur^n, 2008b). Good health policies are hard to formulate if the distribution of the workload relating to this type of care is not known. Hence, the information provided by time-use surveys is crucial to the monetary valuation of domestic health services.