Inpatient and day hospital treatments are the most common intensive interventions for eating disorders and are appropriate for the most severely ill patients. Most programs are multifaceted and based on a biopsychosocial model; because of their complexity, the specific components of treatment and their relative emphasis will likely vary across settings. There is evidence that intensive therapies have good short-term effectiveness for patients who are willing to accept this type of treatment. However, there are no comparative studies indicating that one specific approach is better than any other.