Similarly, obesity is twice as prevalent among people with the lowest level of education. A higher prevalence of risk factors among disadvantaged groups contributes greatly to disparities in health status and life expectancy. Regulation, supervision, planning and quality monitoring are the role of the national government, while service delivery falls under the responsibility of the regions and municipalities. The regions are responsible for defining and running health services, municipalities are responsible for disease prevention, health promotion, rehabilitation, home care and long-term care (see Section 5.3).