Ongoing technological developments and improvements in healthcare have contributed to both increased life expectancy and an increased number of treatment methods available to patients. As modern treatment methods are developed, the need for inpatient care is generally reduced. This also gives increased opportunities for outpatient treatment of patients and thus leads to a shift in volumes from inpatient to outpatient care. This in turn leads to the release of capacity and resources, enabling more patients to receive care of high quality at the same cost for the healthcare system. The share of outpatient care for certain treatment areas varies considerably among European countries.