In addition to limitations in countries’ capacity of distinguishing between planned and unplanned readmissions, differences in care delivery models may also limit the comparability of these rates across countries (OECD Health Statistics, 2014). In Norway and Sweden for example, municipalities are responsible for primary health care, while specialist inpatient and outpatient (mental) health services are governed at the regional level - by counties in Sweden, and health districts in Norway -which has shown to lead to a lack of mental health support at the local level in municipalities. This has led to long waiting times for treatment (OECD, 2013a).