Switzerland and the United Kingdom, with comparatively long hospitalisation durations, have also experienced a strong decrease in the past few years, converging to the averages in other countries. Some countries, e.g. Norway or Denmark, have exceedingly short stays with a mean length below five days, pointing to fundamental differences between countries regarding their mental health care strategies. Furthermore, a Cochrane meta-analysis in 2000 did not find increased readmission risks of planned short-term admissions of patients with severe mental illnesses (Johnstone and Zolese, 2000).