After specifying activities in each costs centers, as well
as time required for performing these activities during a
specific period, costs of cost centers are allocated for
activities proportionally to the percentage of time required to
perform them. This is how costs of activities in each centers
are being defined. Dividing activity costs by the number of
products or services results in the unit cost of each product or
service. Aggregating costs across cost element groups and
cost centre groups makes it possible to show the costs per
patient or per patient group (DRGs) in a concise manner
[11].