Finnish and Australian researchers reviewed 50 studies with relevant data on people with diagnoses of schizophrenia and related psychoses who had met criteria for both clinical and social recovery for at least two years. They found a higher proportion of recovery from sites in countries with poorer economic status, and that despite major changes in treatment options in recent decades, the proportion of recovered cases has not increased.
Jääskeläinen, E., Juola1, P., Hirvonen, N., et al; A Systematic Review and Meta-Analysis of Recovery in Schizophrenia. Schizophrenia Bulletin. Online November 20, 2012